Answer
$x=-2$.
Work Step by Step
The given equation is
$\Rightarrow x+9=7$
Subtract $9$ from both sides.
$\Rightarrow x+9-9=7-9$
Simplify.
$\Rightarrow x=-2$
Check:-
$\Rightarrow -2+9=7$
$\Rightarrow 7=7$
True.
Hence, the solution is $x=-2$.
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 1 - Solving Linear Equations - 1.1-1.3 - Quiz - Page 26: 1
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