Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 2 - Section 2.1 - Linear Equations in One Variable - Exercise Set: 9

Answer

$z = -1.1$

Work Step by Step

$-4.1 - 7z = 3.6$ $-4.1 - 7z + 4.1 = 3.6 + 4.1$ $-4.1 + 4.1 - 7z = 7.7$ $-7z = 7.7$ $(-7z)\div(-7) = 7.7\div-7$ $z = -1.1$ Check: $-4.1 - 7(-1.1) = 3.6$ $-4.1 + 7.7 = 3.6$ $3.6 = 3.6$
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