Question 924196
x the son's age and y the Father's age
(y - 10) + (x-10) = 44
y = {{{-x + 64}}}

2(-x+64) = 6x + 8
-2x + 128 = 6x + 8
120 = 8x
15 = x,  the son's age
............
and...checking (Father's age 49)
2y = 6x + 8
98 = 90 + 8