how should i remember order of ops (operations)?

PEMDAS does really help. You can also remember it as please excuse my dear aunt sally.

i see people using PEMDAS as order of operations. But what i learned was BEDMAS Brackets Exponents Division Multiplication Addition Subtraction Im pretty sure it means the same thing but why does everyone have a different name for it?

They are the same, but the two together show some good distinctions. Brackets [] and Parentheses () both have to include the other one because you could see both. It also reminds us that division and multiplication are on the same level, so generally done left to right. Also, addition and subtraction are on the same level left to right.

I still don't get it..How can I learn this without having negative thoughts about how dumb I really am?

It’s important to give yourself time, understanding math concepts is a matter of effort but also patience, don’t beat yourself down because you think you can’t do it, and ask questions if you get stuck

what does sal mean when he said he can factor the two out? and how did he get one from the two?

Factoring is the opposite of multiplying by distribution. For example: Multiplication: 2(5x+1) = 2(5x) + 2(1) = 10x+2 To factor, you reverse the process. You identify the common factor in both terms (the 2), you write the 2 in front and you divide each term by 2. 10x+2 = 2(10x/2 + 2/2) = 2(5x+1) Notice, the 2/2 = 1, that is where the 1 is coming from in the video. Hope this helps.

why do you have a 1 left over at 1:42 ?

When you multiply 2 by x and 2 by y and 2 by 1 you get 2x+2y+2. I hope that helps.

Is a number with multiple letters accountable? (2jkl).

What matters is the idea of a common factor , if you have: 2kjl +4kj +2 you can still factor this as : 2(kjl + 2kj +1) the expressions are still equivalent

أين العرب هنا؟ :)

i'm confused...could you translate that to English please?

I am probably being dumb right now, but I am confused. He said that at 1:41 that when you factor out the 2 you get 1. Did he say that cuz 1+1=2?

Not quite, it's because if you divide 2 by 2, you get 1. He was factoring out ech of the numbers by dividing them by 2. And you're not dumb, sometimes people just need a different explanation.

When he factors out the 2, he gets 1. I don’t quite understand how you got 1 by factoring out the 2!

If you factor 2 from 2, you are dividing 2/2=1

Main content

Get ready for 7th grade

Course: Get ready for 7th grade > Unit 4

Lesson 3: Equivalent expressions

Equivalent expressions

Name: Equivalent expressions
Uploaded: 2015-06-03T17:48:02Z
Description: In this math lesson, we learn how to find equivalent expressions by combining like terms and factoring. We start with an expression like x + 2 - y + x + 2 and simplify it by adding the x terms and factoring out common factors. This helps us compare expressions and solve problems more easily.

Google Classroom

In this math lesson, we learn how to find equivalent expressions by combining like terms and factoring. We start with an expression like x + 2 - y + x + 2 and simplify it by adding the x terms and factoring out common factors. This helps us compare expressions and solve problems more easily.

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Christine Wasiewski
Posted 6 years ago. Direct link to Christine Wasiewski's post “how should i remember ord...”
how should i remember order of ops (operations)?
Button navigates to signup pageComment on Christine Wasiewski's post “how should i remember ord...”
(17 votes)
Answer
- EdgarAllanPoe
  Posted 6 years ago. Direct link to EdgarAllanPoe's post “PEMDAS does really help. ...”
  PEMDAS does really help. You can also remember it as please excuse my dear aunt sally.
  Comment on EdgarAllanPoe's post “PEMDAS does really help. ...”
  (52 votes)
TheParrots
Posted 4 years ago. Direct link to TheParrots's post “i see people using PEMDAS...”
i see people using PEMDAS as order of operations. But what i learned was BEDMAS
Brackets
Exponents
Division
Multiplication
Addition
Subtraction
Im pretty sure it means the same thing but why does everyone have a different name for it?
Button navigates to signup pageComment on TheParrots's post “i see people using PEMDAS...”
(17 votes)
Answer
- David Severin
  Posted 4 years ago. Direct link to David Severin's post “They are the same, but th...”
  They are the same, but the two together show some good distinctions. Brackets [] and Parentheses () both have to include the other one because you could see both. It also reminds us that division and multiplication are on the same level, so generally done left to right. Also, addition and subtraction are on the same level left to right.
  Comment on David Severin's post “They are the same, but th...”
  (10 votes)
Churro-Sama
Posted 2 years ago. Direct link to Churro-Sama's post “I still don't get it..How...”
I still don't get it..How can I learn this without having negative thoughts about how dumb I really am?
Button navigates to signup pageComment on Churro-Sama's post “I still don't get it..How...”
(11 votes)
Answer
- Louis.Arnoult
  Posted 2 years ago. Direct link to Louis.Arnoult's post “It’s important to give yo...”
  It’s important to give yourself time, understanding math concepts is a matter of effort but also patience, don’t beat yourself down because you think you can’t do it, and ask questions if you get stuck
  Comment on Louis.Arnoult's post “It’s important to give yo...”
  (8 votes)
Nahealani
Posted 2 years ago. Direct link to Nahealani's post “what does sal mean when h...”
what does sal mean when he said he can factor the two out? and how did he get one from the two?
Button navigates to signup pageComment on Nahealani's post “what does sal mean when h...”
(5 votes)
Answer
- Kim Seidel
  Posted 2 years ago. Direct link to Kim Seidel's post “Factoring is the opposite...”
  Factoring is the opposite of multiplying by distribution.
  For example:
  Multiplication: 2(5x+1) = 2(5x) + 2(1) = 10x+2
  To factor, you reverse the process. You identify the common factor in both terms (the 2), you write the 2 in front and you divide each term by 2.
  10x+2 = 2(10x/2 + 2/2) = 2(5x+1)
  
  Notice, the 2/2 = 1, that is where the 1 is coming from in the video.
  
  Hope this helps.
  Comment on Kim Seidel's post “Factoring is the opposite...”
  (14 votes)
1079882
Posted 7 months ago. Direct link to 1079882's post “I am probably being dumb ...”
I am probably being dumb right now, but I am confused. He said that at
1:41
that when you factor out the 2 you get 1. Did he say that cuz 1+1=2?
Button navigates to signup pageComment on 1079882's post “I am probably being dumb ...”
(1 vote)
Answer
- Kayla davison
  Posted 7 months ago. Direct link to Kayla davison's post “Not quite, it's because i...”
  Not quite, it's because if you divide 2 by 2, you get 1. He was factoring out ech of the numbers by dividing them by 2. And you're not dumb, sometimes people just need a different explanation.
  Comment on Kayla davison's post “Not quite, it's because i...”
  (20 votes)
loyolalandon
Posted 5 months ago. Direct link to loyolalandon's post “In this math lesson, we l...”
In this math lesson, we learn how to find equivalent expressions by combining like terms and factoring. We start with an expression like x + 2 - y + x + 2 and simplify it by adding the x terms and factoring out common factors. This helps us compare expressions and solve problems more easily.
Button navigates to signup pageButton navigates to signup page
(3 votes)
Answer
- Viv
  Posted 3 months ago. Direct link to Viv's post “I like tacos”
  I like tacos
  Comment on Viv's post “I like tacos”
  (13 votes)
zoieisbest
Posted 4 years ago. Direct link to zoieisbest's post “why do you have a 1 left ...”
why do you have a 1 left over at
1:42
?
Button navigates to signup pageComment on zoieisbest's post “why do you have a 1 left ...”
(5 votes)
Answer
- Bella
  Posted 3 years ago. Direct link to Bella's post “When you multiply 2 by x ...”
  When you multiply 2 by x and 2 by y and 2 by 1 you get 2x+2y+2. I hope that helps.
  Button navigates to signup page
  (3 votes)
Ruhan
Posted 5 months ago. Direct link to Ruhan's post “When he factors out the 2...”
When he factors out the 2, he gets 1. I don’t quite understand how you got 1 by factoring out the 2!
Button navigates to signup pageButton navigates to signup page
(0 votes)
Answer
- Kim Seidel
  Posted 5 months ago. Direct link to Kim Seidel's post “If you factor 2 from 2, y...”
  If you factor 2 from 2, you are dividing 2/2=1
  Button navigates to signup page
  (13 votes)
Lucas
Posted 6 years ago. Direct link to Lucas's post “Is a number with multiple...”
Is a number with multiple letters accountable? (2jkl).
Button navigates to signup pageComment on Lucas's post “Is a number with multiple...”
(5 votes)
Answer
- Louis.Arnoult
  Posted 2 years ago. Direct link to Louis.Arnoult's post “What matters is the idea ...”
  What matters is the idea of a common factor , if you have:
  
  2kjl +4kj +2 you can still factor this as : 2(kjl + 2kj +1) the expressions are still equivalent
  Button navigates to signup page
  (3 votes)
Malek Aledwan
Posted a year ago. Direct link to Malek Aledwan's post “أين العرب هنا؟ :)”
أين العرب هنا؟ :)
Button navigates to signup pageComment on Malek Aledwan's post “أين العرب هنا؟ :)”
(3 votes)
Answer
- #EK-Animal-Lover
  Posted a year ago. Direct link to #EK-Animal-Lover's post “i'm confused...could you ...”
  i'm confused...could you translate that to English please?
  Comment on #EK-Animal-Lover's post “i'm confused...could you ...”
  (7 votes)

Video transcript

- Which expressions are equivalent to x plus two-y plus x plus two? Select all that apply. Alright. Let's see if I can manipulate this thing a little bit. Let me just rewrite it so I have x plus... x plus two-y plus x plus two. So, the first thing that jumps out at me, before I even look at these choices, here I have an x over here, I have an x over there. Well, if I have one x, and then I can add it to another x that would be two-x so I could rewrite this... let me do this in a different color. I could rewrite this x and this x, if I add them together that's going to be two-x. So, this is...actually, I don't want to skip any steps. So, that's x plus x plus two-y... now I'm just switching the order...plus two. And then these two x's right over here, I can just rewrite that as two-x. So, I have two-x plus two-y... plus two-y plus two. Now, let's see, out of all my choices... so, this one, this is two-x plus four-y plus four. So, that's not right, I have two-x plus two-y plus 2, so I can rule this one out. Now, this one's interesting, it looks like they have factored out a two. Let's see if we factor out a two here, what happens? So, we do see that two is a factor of that term, it's a factor of that term, and it's a factor of that term. So, let's see if we can factor it out. So, this is going to be two times x, I'll do the x in that same magenta color, two times x plus, we have just a y left when you factor out the two. And then if you factor out a two here, you're just going to have a one left. So, two times x plus y plus one. Which is exactly what they have over here. And since I was able to find a choice, I will not pick "None of the above".