Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 2 - Section 2.2 - The Multiplication Property of Equality - Exercise Set - Page 130: 19



Work Step by Step

Multiply both sides by -$\frac{2}{7}$ to isolate the variable. 28=-$\frac{7}{2}$x -$\frac{7}{2}$x=28 $\frac{-2(-7)x}{7(2)}$=-$\frac{28(2)}{7}$ $x=-\frac{56}{7}$ $x=-8$ Check the answer. -$\frac{7}{2}$(-8)=28 $\frac{7(8)}{2}$=28 $\frac{56}{2}$=28 28=28
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