Question

Verify that -(-x) = x for x=-4/15​

Answer 1

Given :-

$\sf\bullet {x\:=\: \frac{-4}{15}}$

To Prove :-

$\sf\bullet {-(-x)\:=\:x }$

Proof :-

$\sf{-(-x)\:=\:x }$

$\sf\bullet {Put \:x\:=\:\frac{-4}{15}}$

$\sf{x\:=\:-[-(\frac{-4}{15})]}$

$\sf{x\:=\:-(\frac{4}{15})}$

$\sf{x\:=\:-\frac{4}{15}}$

$\sf{So\:x\:is\: same}$

$\tt{Hence\: Verified}$