Question

Verify that -(-x)=x
$verify \: that \: - ( - x) = x \\ x = 11 \\ \: \: \: \: \: \: \: \: \: \: \: 15$
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Answer 1

-(-x)=x because, -x- = +.
So,-(-x)= +x

Answer 2

Answer:

See the attachment

Step-by-step explanation:

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