Question

Verify that a + b = b + a for:
a = 3 upon 7
b= -1 upon 5​

Answer 1

For a+b

a+b=3/7 +(-1/5)

=3/7-1/5

=15-7/35

=8/35

For b+a

b+a=-1/5+3/7

=-7+15/35

=8/35

Hence a+b=b+a

Answer 2

Answer:

Veryfied under commutative property

Step-by-step explanation:

21+-5=-5+21

16=16

hence verifyed