Question

Уровнение+проверка
5500-x=3939
m:9=81810

Answer 1

5500-x=3939

х=5500-3939

х= 1561

_________________

5500-1561=3939

 3939=3939

 

 m:9=81810

m=81810*9

m= 736290

_____________

736290:9=81810

 81810=81810

 

Answer 2

1) 5500-x = 3939

x = 5500-3939

x = 1561

Пр.: 5500 - 1561 = 3939

 

2) m : 9 = 81810

m = 81810*9

m = 736290

Пр.: 736290 : 9 = 81810