题目内容
3
÷
×(-
).
2
|
| 1 |
| 2 |
|
| 1 |
| 8 |
| 15 |
原式=3×
÷
×
×(-
)
=-2
×
×
=-
.
2
| ||
| 3 |
| 1 |
| 2 |
| ||
| 5 |
| 1 |
| 8 |
| 15 |
=-2
| 6 |
| 10 | ||
|
| ||
| 8 |
=-
| 15 |
| 2 |
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题目内容
2
|
| 1 |
| 2 |
|
| 1 |
| 8 |
| 15 |
2
| ||
| 3 |
| 1 |
| 2 |
| ||
| 5 |
| 1 |
| 8 |
| 15 |
| 6 |
| 10 | ||
|
| ||
| 8 |
| 15 |
| 2 |