Question

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

Answer 1

Answer:

please let me know for any other quires good luck buddy :)

Step-by-step explanation:

given -(-a)=a

now use a= -19/21

consider LHS -(-a)

=-(-(-19/21))

=-(19/21)

= -19/21

RHS a=-19/21

as LHS = RHS it is TRUE

hope you understood :)