Question

verify the -(-x) = x for x = -21/31 step by step explation​

Answer 1

Answer:

As we know, Multiplying a negative sign to another negative sign gives a positive sign.

Step-by-step explanation:

Here,

-(-x) = +x = x

Similarly,

If x = -21/31

then,

- (-x) = - {-(-21/31)} = - {21/31} = -21/31.

So, the answer will be -21/31.

Hope this answers your question.

Answer 2

$given \\ - ( - x) = - x \\ since \\ x = - \frac{21}{31} \\ than \\ - ( - x) = - ( - \frac{21}{31}) = \frac{21}{31}$