1) x + 120 = 40 * 5x + 120 = 200x = 200 - 120x = 80
Ответ: x = 80
2) x + 20 = 40 * 5x + 20 = 200x = 200 - 20x = 180
Ответ: x = 180
1) x + 120 = 40 * 5
x + 120 = 200
x = 200 - 120
x = 80
Ответ: x = 80
2) x + 20 = 40 * 5
x + 20 = 200
x = 200 - 20
x = 180
Ответ: x = 180