Question

if a,b,C are three rational number where a =
2/3 b = 4/5 C =-5/6 verify a+(b+C)= (a+b)+c​

Answer 1

Step-by-step explanation:

LHS:

b+C = 4/5+(-5/6)

= 4/5-5/6

= (24-25)/30 = -1/30

a+(b+C) =2/3+(-1/30)

=2/3-1/30

= (20-1)/30

=19/30

RHS:

a+b = 2/3+4/5

=(10+12)/15

=22/15

(a+b)+C = 22/15+(-5/6)

=22/15-5/6

=(44-25)/30

=19/30 =LHS