Answer
x=-$\triangle$
Work Step by Step
Multiply both sides by -1 to isolate the variable.
$\triangle$=-x
$\triangle$(-1)=-x(-1)
-$\triangle$=x
x=-$\triangle$
Introductory Algebra for College Students (7th Edition)
by Blitzer, Robert F.
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: 57
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