Answer
$x=-10$
Work Step by Step
$-x-5=5$
First add 5 to both sides.
$-x=5+5$
$-x=10$
Then multiply both sides by -1.
$-x(-1)=10(-1)$
$x=-10$
Check the answer.
-(-10)-5=5
10-5=5
5=5
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