Question

solve that -(-x) = x and x=10/13

Answer 1

-(-x) = x

LHS. RHS
-(-10/13) =. 10/13

because - and - when multipicated then the number becomes positive so.

-(-10/13) = 10/13

Answer 2

$\huge{\mathbb{\blue{Answer}}}$

$x = \frac{10}{13} \\ \\ - x = \frac{ - 10}{13} \\ \\ - ( - x) = - ( \frac{ - 10}{13} ) \\ \\ + ( + x) = \frac{10}{13}$