Question

1. Verify the property x × y = y × x of rational numbers by using   (a) x = 7 and y = 1/2     (b) x =  -3/8 and y = -4/9​

Answer 1

a.

ans. x*y=7*1/2=3.5

y*x=1/2*7=3.5

LHS=RHS

hence verified. We used commutative property for multiplication here.

b.

ans. x*y=-3/8*-4/9=12/72=1/6

y*x=-4/9*-3/8=12/72=1/6

LHS=RHS

hence verified. We used commutative property for multiplication here.