(150-x):2=65 с проверкой решите

Question

(150-x):2=65
с проверкой решите

Answer 1

(150-x):2=65
150-х = 65*2
150-х = 130
х = 150-130 
х = 20
Проверка
(150-20):2 = 65
130:2 = 65
65 = 65

Answer 2

(150-20):2=65
130:2=65
65=65