Question

Verify that -(-x) is the same as x forx= -21/31

Answer 1

x = - 21/31

-(-x) = -[-(-21/31)]

x = -21/31

hope it helps you

Answer 2

Answer:

$\huge\bold{\underline{\underline{Solution}}}$

$if \: x = \dfrac{ - 21}{31} \\ \\ \\ then \\ \\ \\ \implies - ( - x) = -\left[ - \middle( \frac{ - 21}{31}\middle)\right]\\ \\ \\ \\ \implies \: x = \left( - \frac{ 21}{31}\right) \\ \\ \\ hence \: verfied$