Реши уравнения.
80 : x = 8
32 : x = 4
x : 8 = 8
x * 3 = 21
x + 29 = 80
x − 2 = 40
80 : x = 8
x = 80 : 8
x = 10
32 : x = 4
x = 32 : 4
x = 8
x : 8 = 8
x = 8 * 8
x = 64
x * 3 = 21
x = 21 : 3
x = 7
x + 29 = 80
x = 80 − 29
x = 51
x − 2 = 40
x = 40 + 2
x = 42