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2 years ago

15=7-|2x| Solve for x in this absolute value equation.

2 answers:

DIA [1.3K]2 years ago

8 0

$15=7-|2x|\\
-|2x|=8\\
|2x|=-8\\
x\in\emptyset$

6 0

$7-|2x|=15\ \ \ \ |subtract\ 7\ from\ both\ sides\\\\-|2x|=8\\\\|2x|=-8-FALSE\\\\x\in\O\ because\ |a|\geq0\ for\ each\ a\in\mathbb{R}$

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