Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 1 - Expressions, Equations, and Inequalities - Chapter Review - Page 52: 21



Work Step by Step

We start by distributing. We have $3(x+1)=9+2x$ $3x+3=9+2x$. Now, we add (-2x) and (-3) to both sides to isolate $x$ and its coefficient. We now have $x=6$. To check, we substitute 6 (the answer) into the equation. We have $3((6)+1)=9+2(6)?$ $3(7)=9+12?$ $21=21$, which is true.
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