Уравнение 1.
x-300=5298

2.x+900=6731

3.x умножить 208=20800
4.x умножить 31=31000
5. 350:x=50
6. 800:x=20

спасибо

1. x - 300 = 5298x = 5298 + 300x = 55982. x + 900 = 6731x = 6731 - 900x = 58313. x × 208 = 20800x = 20800 ÷ 208x = 1004. x × 31 = 31000x = 31000 ÷ 31x = 10005. 350 ÷ x = 50x = 350 ÷ 50x = 76. 800 ÷ x = 20x = 800 ÷ 20x = 40