Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - Chapter 1 Review Problem Set - Page 38: 43



Work Step by Step

In order to combine like terms, we use a form of the distributive property to rewrite $12x+3x-7x$ as $(12+3-7)x$ We add inside of the parentheses: $(12+3+(-7))x=8x$
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