Question

for x = -2/9 , y= -4/9 , z= 5/-14 ,show that x-(y-z) is not equal to (x-y) - z ​

Answer 1

Answer:

lhs = -0.16

rhs =0.56

is the answer therefore it is proved that x-(y-z) ≠ (x-y) -z

Answer 2

LHS

x-(y-z)=-2/9-(-4/9-5/-14)

=-2/9×(+4/9+5/-14)

=-2/9×4/9+5/-14×-2/9

RHS

(x-y)-z=(-2/9+4/9)-5/-14

=(-2/9+4/9)×5/14

=(-2/9×5/14+4/9×5/14)

Hence, LHS doesn't =RHS

So, it's proved...