题目内容
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| 1 |
| ( ) |
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| 1 |
| ( ) |
5
5
组解.分析:根据题意,原式=
+
=
+
=
,然后再根据分数的拆项进一步解答即可.
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| 1 |
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解答:解:根据题意可得:
原式=
+
=
+
=
,
根据分数的拆项可得:
=
+
=
+
=
+
=
+
=
+
;
共有5组解;
所以,
-
=
+
(括号内为自然数),共有5组解.
故答案为:5.
原式=
| 1 |
| () |
| 1 |
| () |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 6 |
根据分数的拆项可得:
| 1 |
| 6 |
| 1 |
| 12 |
| 1 |
| 12 |
| 1 |
| 10 |
| 1 |
| 15 |
| 1 |
| 9 |
| 1 |
| 18 |
| 1 |
| 8 |
| 1 |
| 24 |
| 1 |
| 7 |
| 1 |
| 42 |
共有5组解;
所以,
| 1 |
| 2 |
| 1 |
| ( ) |
| 1 |
| 3 |
| 1 |
| ( ) |
故答案为:5.
点评:本题先把原式变换形式,然后再根据分数的拆项进一步解答即可.
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