Question

verify that -(-x)=x,when:(i) x=8/5
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Answer 1

-(-x)

Put8/5 in place of x.

-(-8/5)=8/5

Hence proved.

Answer 2

8 equal to 8/5

the additive inverse of x equal to 8/5 is -x equal to -8/5

as 8/5 +(-8/5) equal to 0

this equality 8/5 + -8/5 equal to 0

Respresent that the additive inverse of -8/5 is 8/5

i. e., -(-x) equal to x

Hence proved