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### Course: Arithmetic>Unit 13

Lesson 4: Adding and subtracting fractions with unlike denominators

# Adding and subtracting 3 fractions

Learn how to add and subtract fractions with unlike denominators. They watch the process of finding a common denominator, then practice adding and subtracting the fractions to solve the problems.

## Want to join the conversation?

• What do I do if I have three minuses?
• add a 1 under the three
• is it true nobody reads these things?pls upvote
• yea because you dont want to be here your are just forced to and when you do this you just want to leave and stop being here and so we just dont care about the comments unless your just bored or need help
• Why are the questions hard
• Cause they want you to struggle
(1 vote)
• upvote me so i get a badge pls
• Why is some math so easy but some so hard?
• Because the so easy ones are starters, and the other ones that are so hard are the last ones.
• hi I need help do you how to do this
• Find the LCM then change that to the LCD and then subtract, add, multiply, divide. ( LCM means least common multiple) (LCD means least common denominator)
• Thank you now i know how to add or subtract three fractions. again thank you
• It doesn't make sense when the top number is more than the demoninator on the worksheet
• It’s Just a mixed numeral
(1 vote)
• will it always matter on the denominator
• no it will not matter
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cool