Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 1 - Section 1.4 - Basic Rules of Algebra - Exercise Set - Page 53: 54



Work Step by Step

Commutative properties: $a+b=b+a,\qquad ab=ba$ Associative properties:$ a+(b+c)=(a+b)+c,\qquad a(bc)=(ab)c$ Distributive property: $\quad A(x+y)=Ax+Ay$ --- $ 8y+7+10y=\qquad$ ...commutative property: $7$ and $10y$ can change places $=8y+10y+7=$ ...associative property: we can add any pair we like, first $=(8y+10y)+7$ ... combine like terms, = $18y+7$
Update this answer!

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.