Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 1 - Foundations for Algebra - Chapter Test - Page 73: 17



Work Step by Step

$-3[b-(-7)]$ change subtraction to addition by changing the sign of following term $-3[b+7]$ use the distributive property $(-3)(b)+(-3)(7)$ multiply $-3b-21$
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