Question

If (8c-7d)/(d)=2, find the value of (5c-6d)/(2c)

Answer 1

8c-7d = 2d

8c = 9d
d = 8c/9

(5c-6d)/(2c)
= (5c - 6*8c/9)/(2c)
= (45c - 48c)/(9*2c)
= -3c / 18c
= -1/6