Question

Verify that –(-x)= x true for x= -19/21.​

Answer 1

Answer:

-(-x) =x

Step-by-step explanation:

Additive inverese of x=-x=-19/21

Check: 19/21 + (-19/21)=0

Additive inverese of x=-(-x)

=(-19/21)+19/21

Check: -19/21+19/21=0

This, -19/21.