Question

Verify that a+b =b+a
a) a=6 and b=3
b) a=2/3 and b= -3/7

Answer 1

taking lhs

a + b = 6+3 = 9

rhs

b + a = 3 + 6 = 9

therefore lhs = rhs verifies.

similarly you can solve the second one hope tjis helps