Question

Verify that –(-a)=a is true for a =-19/21

Answer 1

Answer:

a =-19/21

a/q

-(-a) = a

-(-19/21) = -19/21

19/21 = -19/21

LHS is not equal to RHS....

Hence,-(-a)=a is not true for a = -19/21

hope it helps you

Answer 2

Answer:

Step-by-step explanation:

-(a) = a

a= -19/21

-(-19/21) = -19/21

19/21 = -19/21

Therefore, -(-a) is not equal to a

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