Question

Tính hợp lí

378 - ( -124 ) + ( - 459 ) + 22 - 124 + 59

Answer 1

\(378-\left(-124\right)+\left(-459\right)+22-124+59\)

\(=\left(378+22\right)-\left(-124+124\right)+\left(-459+59\right)\)

\(=400-0-400=0\)

Answer 2

`378 - ( -124 ) + ( - 459 ) + 22 - 124 + 59`

`= (378+22) + [124+(-124)] + [59+(-459)]`

`= 400 + 0 - 400 `

`= 0`