Question

Solve Q8 only..plz fast

Answer 1

a-(-b) = A+B=A+B    here , - *- = +
a =  21 , b = 18
a-(-b)=a+b     a+b=a+b
21+18 = 21 + 18     39=39
similarly u can do the rest of the problems in the same way

Hope it helps u :)

Answer 2

Q8)

i) LHS= 21-(-18)
=21+18
= 39

RHS= 21+18 =39
LHS=RHS

ii) LHS= 118- (-125)
= 118+ 125
= 243
RHS= 118+125=243
LHS=RHS

iii) LHS= 75-(-84)
=75+84
=159
RHS= 75+84=159
LHS=RHS

iv) LHS= 28-(-11)
= 28+11
= 39
RHS= 28+11=39
LHS=RHS

Hope it helps...