5:у – 250 = 410
5:y = 410+250
5:y = 660
y= 5: 660
y =
Проверка:
5: - 250 = 410
1) 5 : = 660
2) 660 - 250 = 410
5:у – 250 = 410
5:y = 410+250
5:y = 660
y= 5: 660
y =
Проверка:
5:
- 250 = 410
1) 5 :
= 660
2) 660 - 250 = 410