Question

verify that -(-x)=x for x=-7/8
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Answer 1

Answer:

Lhs - -(-x)

-{-(-7/8)}

-7/8

Rhs - x

-7/8

Answer 2

Answer:

-(-x) = x

Let us assume it to be correct

=>0=x+(-x)

=>0=x-x

=>0=0

Hence verified - (-x) = x

Hope it is helpful