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: 52



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: $\quad A(x+y)=Ax+Ay$ --- $ 7+(x+10)=\qquad$ ...commutative property: $x$ and $10$ can change places $=7+(10+x)=$ ...associative property: we can change groupings, $=(7+10)+x$ = $17+x$
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