题目内容
11-3
-(1
×
+1
×
).
| 7 |
| 11 |
| 4 |
| 11 |
| 8 |
| 15 |
| 4 |
| 11 |
| 7 |
| 15 |
11-3
-(1
×
+1
×
).
=11-3
-1
×(
+
)
=11-3
-1
×1
=11-(3
+1
)
=11-5
=6.
| 7 |
| 11 |
| 4 |
| 11 |
| 8 |
| 15 |
| 4 |
| 11 |
| 7 |
| 15 |
=11-3
| 7 |
| 11 |
| 4 |
| 11 |
| 8 |
| 15 |
| 7 |
| 15 |
=11-3
| 7 |
| 11 |
| 4 |
| 11 |
=11-(3
| 7 |
| 11 |
| 4 |
| 11 |
=11-5
=6.
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