Answer
y=-1
Work Step by Step
Mental math tells us that y must be negative.
$\underline y\ \ \ \ \underline{10+10y}$
$-2\ \ \ \ \ \ -10$
$-1\ \ \ \ \ \ \ \ \ \ \ \ \ 0\longrightarrow$ -1 is the solution
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 1 - Foundations for Algebra - 1-8 An Introduction to Equation - Mixed Review - Page 58: 84
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