Question

Verify that x+(y+z)=(x+y)+z if x= -3/5, y= -7/10 and z= -8/15

Answer 1

if x= -3/5, y= -7/10 and z= -8/15

then ,

x+(y+z)=(x+y)+z

-3/5 +(-7/10  - 8/15) = (-3/5 - 7/10) - 8/15

-3/5 +[(-21 - 16)/30] = [(-6 - 7)/10] - 8/15

-3/5 -37/30 = -13/10 - 8/15

(-18 - 37)/30 = (-39- 16)/30

-55/30 = -55/30

L.H.S = R.H.S