Question

Verify a +(–b) = a – b for the following values of a and b.a = 20, b = 12

Answer 1

Answer:

1) 21-(-18)=21+18=39

a+b=21+18=39.

2).118-(-125)=118+125=243

a+b=118-125=243.

3). 75-(-84)=75+84=159

a+b=75+84=159.

4). 28-(-11)=28+11=39

a+b=28+11= 39.

Answer 2

Step-by-step explanation:

L.H.S.=a+(-b)

=20+(-12) [putting the value for a&b as directed]

=20-12

=8

R.H.S.=a-b

=20-12 [putting the value for a&b as directed]

=8

so, L.H.S.=R.H.S. VERIFIED THAT