Work Step by Step
The commutative law of addition states that $a+b=b+a$ (where $a$ and $b$ are real numbers). That is, changing the order of addition does not affect the answer. Therefore, $3a+7b=7b+3a$.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.