1)x: 5 = 10
X=10•5
X=50
50:5=10
2)у : 3 = 15
y=15•3
y=45
45 : 3 = 15
3)х: 2 = 6
x=6•2
x=12
12:2=6
4)12: х = 6
x=12:6
x=2
12: 2 = 6
5)у : 3 = 12
y=12•3
y=36
36: 3 = 12
6)20 : х = 5
x=20:5
x=4
20 : 4 = 5
