123-123+456-456+789-789=?

2 câu trả lời

`123-123+456-456+789-789`

`=(123-123)+(456-456)+(789-789)`

`=0+0+0`

`=0`

 

`123 - 123 + 456 - 456 + 789 - 789`

`= (123 - 123) + (456 - 456) + (789 - 789)`

`= 0 + 0 + 0`

`= 0`