Частина 2. Номер 372

Розв’яжи рівняння.

7 · x = 77
x = 77 : 7
x = 11
7 · 11 = 77
77 = 77

6 · x = 72
x = 72 : 6
x = 12
6 · 12 = 72
72 = 72

5 · x = 75
x = 75 : 5
x = 15
5 · 15 = 75
75 = 75

4 · x = 64
x = 64 : 4
x = 16
4 · 16 = 64
64 = 64

3 · x = 84
x = 84 : 3
x = 28
3 · 28 = 84
84 = 84