题目内容
已知
+
=
,那么a=
| 1 |
| a |
| 2 |
| b |
| 1 |
| 3 |
4(12或6)
4(12或6)
,b=24(8或12)
24(8或12)
.分析:因
=
=
+
=
+
=
+
.或
=
=
+
=
+
=
+
,或
=
=
+
=
+
,据此解答.
| 1 |
| 3 |
| 4 |
| 12 |
| 3 |
| 12 |
| 1 |
| 12 |
| 1 |
| 4 |
| 1 |
| 12 |
| 1 |
| 4 |
| 2 |
| 24 |
| 1 |
| 3 |
| 4 |
| 12 |
| 1 |
| 12 |
| 3 |
| 12 |
| 1 |
| 12 |
| 1 |
| 4 |
| 1 |
| 12 |
| 2 |
| 8 |
| 1 |
| 3 |
| 2 |
| 6 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 6 |
| 2 |
| 12 |
解答:解:据以上分析知:
=
+
,或
=
+
,或
=
+
.
所以a=4(12或6),b=24(8或12).
故答案为:4(12或6),24(8或12).
| 1 |
| 3 |
| 1 |
| 4 |
| 2 |
| 24 |
| 1 |
| 3 |
| 1 |
| 12 |
| 2 |
| 8 |
| 1 |
| 3 |
| 1 |
| 6 |
| 2 |
| 12 |
所以a=4(12或6),b=24(8或12).
故答案为:4(12或6),24(8或12).
点评:本题的关键是根据分数的基本性质把
拆为几分之一加几分之二的形式.
| 1 |
| 3 |
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