Question

9/4=5/x ; 6/y=10/8;12/4=Z/5

Answer 1

9/4=5/x
9x=20
x=20/9 ou 2,22

6/y=10/8
10y=48
y=48/10 ou 4,8

12/4=z/5
4z=60
z=60/4
z=15