If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Modular addition

Problem

Which of the following expressions are equivalent to: left parenthesis, 2611, plus, 135, right parenthesis, start text, space, m, o, d, space, end text, 13
Choose all answers that apply:
Choose all answers that apply:
Stuck?
Stuck?