Question

If (x-9):(3x+6) is the duplicate Ratio and of 4:9, find the value of x using properties of proportion.​

Answer 1

Answer:

9x-81=12x+24

-105=3x

x= -35

Answer 2

(x - 9) / (3x + 6) = 4/9

=> 9 (x - 9) = 4 (3x + 6)

=> 9x - 81 = 12x + 24

=> 9x - 12x = 24 - 81

=> - 3x = - 57

=> x = 57/3

=> x = 19