Question

If x ratio y equal to 8 ratio 9 find the ratio of 7 x minus 4 y ratio 3 X + 2 y

Answer 1

Answer:

10:21

Step-by-step explanation:

x/y=8/9

cross multiply

x=8y/9

put value of x

7(8y/9)-4y/3(8y/9)+2y

56y/9-4y/8y/3+2y

56y-36y/3  / 8y+6y/3

20y/3(14y)

after cutting

10/21

Answer 2

Answer ......

10:21

Explanation......

Let,

x=8k and y=9k

therefore ,

7x-4y=56k -36k=20 k and 3x+2y=24k+18k =42k

now,

20k:42k=10:21