Question

5)Verify: (a/b+c/d)+e/f=a/b+(c/d+e/f) for a/b=-2/3 ,c/d=5/7 and e/f=-1/6​

Answer 1

Step-by-step explanation:

{(-2/3 + 5/7)}+ (-1/6) = (-2/3) + {(5/7-1/6)}

take LHS :

= 1/21 - 1/6

= - 15/(21*6)

= - 5/42

then

LHS = RHS = -5/42

Answer 2

Step-by-step explanation:

(-2/3 + 5/7)+(-1/6)=(-2/3)+{5/7+(-1/6)}

{(-14+15)/21}-1/6=(-2/3)+{(30-7)/42}

(1/21)-(1/6)=(-2/3)+(23/42)

(6-21)/126=(-28+23)/42

(-15/126)=(-5/42)

(-0.12)=(-0.12)