Question

(a+b)+c=a+(b+c)
a = 2/3
b = 5/6
c=5/6​

Answer 1

a=2/3

b=5/6

c=5/6

now

$( \frac{4 + 5}{6} ) + \frac{5}{6} = \frac{2}{3} + ( \frac{5 + 5}{6} ) \\ \frac{9 + 5}{6} = \frac{10 + 4}{6} \\ \frac{14}{6} = \frac{14}{6}$

LHS = RHS