Question

Verify: $-(-x)=x$ for $x=\frac{-13}{17}$

Answer 1

We have to verify

$-(-x)=x$

Given $x=\frac{-13}{17}$

$-(-x)$

$=-\{-(-\frac{13}{17})\}$

$=-\left\{\frac{13}{17}\right\}$

$=-\frac{13}{17}=x$

Hence proved $-(-x)=x$