Question 557387
present age:
son = x
man = 2x

age 9 years ago:
son = x - 9
man = 2x- 9
sum = 66 years

x - 9 + 2x - 9 = 66
3x - 18 = 66
3x = 66 + 18
3x = 84
3x/3 = 84/3
x = 28

age 9 years ago:
son = 28 - 9 = 19
man = 2(28) - 9 = 56 - 9 = 47
19 + 47 = 66
66 = 66

present age:
son = 28
man 2(28) = 56