Question

If xy=yx then find x-y

Answer 1

Hii frnd.

Given, xy=yx
x=x and y=y

we have to calculate x-y
As x=x and y=y
So,
x-y=x-y

Hope it helped u.

Answer 2

given that 
xy=yx
assume x=3
y=2
xy=3*2=6
yx=6
then x-y= 3-2=1