题目内容
9
×15+(
-
+
)×24.
| 18 |
| 19 |
| 3 |
| 8 |
| 7 |
| 12 |
| 1 |
| 4 |
9
×15+(
-
+
)×24
=9
×15+9-14+6
=(10-
)×15+1
=150-
+1
=150
.
| 18 |
| 19 |
| 3 |
| 8 |
| 7 |
| 12 |
| 1 |
| 4 |
=9
| 18 |
| 19 |
=(10-
| 1 |
| 19 |
=150-
| 15 |
| 19 |
=150
| 4 |
| 19 |
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