Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 1 - Section 1.4 - Solving Linear Equations - Exercise Set: 11

Answer

$x=2$

Work Step by Step

Subtract $x$ and subtract $4$ on both sides, and then combine like terms to obtain: $7x-x=16-4 \\\\ 6x=12$ Divide by 6 on both sides to obtain: $x=\dfrac{12}{6} \\x=2$ Check: $\begin{array}{ccc} &7(2)+4&=&2+16 \\&14+4 &= &18 \\&18&=&18\end{array}$
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