Question

x=11+2

11+x=13

x+8000=9191

Answer 1

x = 11 + 2

11 + 2 = x 

x = 13.

Vậy x = 13.

11 + x = 13

 x = 13 - 11

 x = 2.

Vậy x = 2.

x + 8000 = 9191

x = 9191 - 8000

x =     1191.

Vậy x = 1191.

Answer 2

`@` `\text {Ans}`

`\downarrow`

`x = 11 + 2`

`x = 13`

___

`11 + x = 13`

`x = 13 - 11`

`x = 2`

____

`x + 8000 = 9191`

`x = 9191 - 8000`

`x = 1191`

Answer 3

x=13

x=2

x=1191