Question

x = -21, then -(-x) =​

Answer 1

Step-by-step explanation:

x=-21

-(-x)=

-(--21)

-(21)

-21=-(-x)

Answer 2

Answer:

$- \times - = +$

$= x = + x \\ = - ( - x) = + x \\ = x = - 21 \\ = + x = - 21$

Step-by-step explanation:

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