Question 496057
Translate:
m was age y (m-y) years ago.
a. m = 4 * (y - (m-y))
b. m-10 = 9 + (y-10)
a. m = 8y - 4m; 5m = 8y
b. m = y + 9; 5m = 5y + 45
3y = 45
y=15
m=24