为第一道数学题哭:24场

2: 3 × ((4 + 10) +(- 6))

3: 3 × (4 + (10 +(- 6)))

4: 3 × (4+( - 6 )+ 10)

5: 3 × ((4 +(- 6)) + 10)

6: 3 × (10 + 4 +(- 6))

7: 3 × ((10 + 4) +(- 6))

8: 3 × (10 + (4 +(- 6)))