Question

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

Answer 1

a=2/3

b=4/5

c=-5/6

a+(b+c)=(a+b)+c​ =

2/3 + (4/5 + 5/6) = (2/3 + 4/5) + 5/6

Making the denominator same

4/5 = 20/30

5/6 =  25/30

2/3 =    20/30

So 20/30 + (20/30 + 25/30) = (20/30 + 20/30) + 25/30 =

20/30 + 45/30 = 40/30 +25/30

65/30 = 65/30

Hence Verified.