Heya!!!
Answer to your question:
2x-y=0 ----(i)
3x-2y=-3 -----(ii)
multiply (i) by 2
4x-2y=0 -------(iii)
Subtracting (ii) from (iii)
4x-2y-3x+2y=0-(-3)
x=3
put value of x in (i)
2 (3)-y=0
y=6
x=3,y=6
Hope it helps *_*
72 + 12x = 24 + 24x
48 = 12x
4 = x
It‘ll take 4 years.