Реши уравнения.
x : 5 = 10;
x : 7 = 6;
28 − x = 28;
72 − x = 7;
x − 15 = 0;
x − 48 = 7.
x : 5 = 10
x = 10 * 5
x = 50
x : 7 = 6
x = 6 * 7
x = 42
28 − x = 28
x = 28 − 28
x = 0
72 − x = 7
x = 72 − 7
x = 65
x − 15 = 0
x = 0 + 15
x = 15
x − 48 = 7
x = 7 + 48
x = 55