题目内容
如果8
-1.5÷[1
×(□+1
)]=8
,那么□里应填______.
| a |
| 3 |
| b |
| 5 |
| c |
| 7 |
| 1 |
| 3 |
8
| a |
| 3 |
| b |
| 5 |
| c |
| 7 |
| 1 |
| 3 |
| 24+a |
| 3 |
| 3 |
| 2 |
| 5+b |
| 5 |
| 7+c |
| 7 |
| 25 |
| 3 |
| 3 |
| 2 |
| 24+a |
| 3 |
| 25 |
| 3 |
| 5+b |
| 5 |
| 7+c |
| 7 |
(
| 3 |
| 2 |
| a-1 |
| 3 |
| 5+b |
| 5 |
| 7+c |
| 7 |
□=
| 45 |
| 2(a-1)(5+b) |
| 7+c |
| 7 |
□=
| 315-2(a-1)(5+b)(7+c) |
| 14(a-1)(5+b) |
故答案为:
| 315-2(a-1)(5+b)(7+c) |
| 14(a-1)(5+b) |
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