题目内容
125+(5
+7
+
×
)×(1
-1.75)．
| 8 |
| 15 |
| 7 |
| 15 |
| 1 |
| 1998 |
| 1 |
| 1999 |
| 3 |
| 4 |
125+(5
+7
+
×
)×(1
-1.75)，
=125+（5
+7
+
×
）×0，
=125+0，
=125．
| 8 |
| 15 |
| 7 |
| 15 |
| 1 |
| 1998 |
| 1 |
| 1999 |
| 3 |
| 4 |
=125+（5
| 8 |
| 15 |
| 7 |
| 15 |
| 1 |
| 1998 |
| 1 |
| 1999 |
=125+0，
=125．
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