题目内容
2÷(
+
)×
.
| 1 |
| 5 |
| 1 |
| 3 |
| 4 |
| 15 |
2÷(
+
)×
,
=2÷
×
,
=2×
×
,
=1.
| 1 |
| 5 |
| 1 |
| 3 |
| 4 |
| 15 |
=2÷
| 8 |
| 15 |
| 4 |
| 15 |
=2×
| 15 |
| 8 |
| 4 |
| 15 |
=1.
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