Question

plzzzzzzzzzz...... help by solving​

Answer 1

Answer:

1)

2)

Step-by-step explanation:

-(-a)

-(-7/5)

7/5

-(-a)

-{-(-11/18}

-(11/18)

-11/18

Answer 2

Answer:

Step-by-step explanation:

-(-a) = a

as you know minus + minus = plus .............(1)

So as in the following cases

(1) 7/5 =  -(-7/5)

          => u have to prove -(-7/5) as positive

therefore, on using equation 1 we get -(-7/5) as positive

(2) and in the second case  u have to put -[-(-11/18)]

                                                               => -(11/8) is not equal to +a

                                  therefore , in this case -(-a) is not equal to +a

HOPE THIS WILL HELP YOU