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:
$-4.1 - 7(-1.1) = 3.6$
$-4.1 + 7.7 = 3.6$
$3.6 = 3.6$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
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 - Page 55: 9
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