Question

if a = -11/27, b= 4/9 and c= -5/18, then verify that a + (b +c) = (a+b) + c​

Answer 1

-11/27+(4/9+-5/18)

-11/27+3/18

-13/54

(-11/27+4/9)+-5/18

1/27+-5/18

-13/54

hence,a+(b+c)=(a+b)+c