Question

Verify the property x+y=y+x of rational numbers by taking.(a) x=1/2 ,y=1/2(b) x=-2/3 ,y=-5/6(c) x=-3/7 ,y=20/21(d) x=-2/5 ,y=-9/10​

Answer 1

a) 1/2+1/2=1/2+1/2

2/2=2/2

1=1

b)(-2/3)+(-5/6)=(-5/6)+(-2/3)

-7/6=-7/6

c)(-3/7)+20/21=-20/21+(-3/7)

-29/21=-29/21

d)(-2/5)+(-9/10)=(-9/10)+(-2/5)

-13/10=-13/10

hence proved....enjoy....!! May it helped you....!!!!