题目内容
[7-(1
×
+1
×
)]÷1.75.
| 3 |
| 4 |
| 5 |
| 9 |
| 3 |
| 4 |
| 4 |
| 9 |
[7-(1
×
+1
×
)]÷1.75
=[7-(
+
)×1
]÷1.75,
=[7-1×1
]÷1.75,
=[7-1
]÷1.75,
=5.25÷1.75,
=3.
| 3 |
| 4 |
| 5 |
| 9 |
| 3 |
| 4 |
| 4 |
| 9 |
=[7-(
| 5 |
| 9 |
| 4 |
| 9 |
| 3 |
| 4 |
=[7-1×1
| 3 |
| 4 |
=[7-1
| 3 |
| 4 |
=5.25÷1.75,
=3.
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