4. Реши уравнения: X·5 = 65; 56:Y = 4; 6·A + 10 = 100.

1) X · 5 = 65
X = 65 : 5
X = 13

2) 56 : Y = 4
Y = 56 : 4
Y = 14

3) 6 · A + 10 = 100
6 · A = 100 − 10
6 · A = 90
A = 15