Question

i need step by step explanations ::::%::::​

Answer 1

Answer:

let present age x ,y

now (x-6)/(y-6)=4/3

3x-18=4y-24

3x=4y-6

x=(4y-6)/3

and (x+9)/(y+9)=7/6

6x+54=7y+63

6((4y-6)/3)-7y=63-54

2(4y-6)-7y=9

8y-12-7y=9

y=9+12=21

x=(4*21-6)/3=(84-6)/3=78/3=26

age 21,26