Уравнение: (х+3)•7=133

Question

Уравнение: (х+3)•7=133

Answer 1

(х+3) * 7 = 133,
х + 3 = 133 : 7,
х + 3 = 19,
х = 19 - 3,
х = 16
проверка:
(16+3)*7=133,
19*7=133,
133=133

Answer 2

(x+3)*7=133
7x+21=133
7x=133-21
7x=112
x=112/7
x=16