Question

A=1/3 ,B=-3/4 ,C=-8/9 verify (a+b)+c=a+(b+c)

Answer 1

LHS (a+b)+c =(1/3+(-3/4)) +(-8/9) =(1/3-3/4) -8/8 =(4-9)/12+(-8/9) =-5/12-8/9 =(-15-32)/36 =-47/36 RHS a+(b+c) =1/3+(-3/4+(-8/9)) =1/3+(-3/4-8/9) =1/3+((-27-32)/36) =1/3-59/36 =(12-59)/36 =-47/36 Since, LHS=RHS Hence,Verified