Question

Verify that-(x) =x, when: x=8/5

Answer 1

is that question is -x or -(x)?

not possible

Answer 2

x=8/5

the additive inverse of x = 8/5 is -x = -8/5

as 8/5 + (-8/5) = 0

this equality 8/5 + (-8/5) = 0

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

i.e., -(-x) = x