Answer:
x = 9, y = 12, u = 24, v = 32
Explanation:
3/5 = (x + 3)/20 4/5 = (y + 4)/20 3/5 = (u + x + 3)/60
3*20 = 5(x + 3) 4*20 = 5(y + 4) 3*60 = 5(u + 9 + 3)
60 = 5x + 15 80 = 5y + 20 180 = 5(u + 12)
x = (60 - 15)/5 y = (80 - 20)/5 180 = 5u + 60
x = 9 y = 12 u = (180 - 60)/5
u = 24
4/5 = (v + y + 4)/60
4*60 = 5(v + 12 + 4)
240 = 5(v + 16)
240 = 5v + 80
v = (240 - 80)/5
v = 32