题目内容
不改变分式的值,把下列各式的分子与分母中各项的系数都化为整数.
①
=______;
②
=______;
③
=______;
④
=______.
①
| ||||
2x+
|
②
0.2x-
| ||||
|
③
| 0.8x-0.78y |
| 0.5x+0.4y |
④
| ||
0.6a+
|
①
=
=
;
②
=
=
;
③
=
=
;
④
=
=
.
故答案为:①
;②
;③
;④
.
| ||||
2x+
|
30(
| ||||
30(2x+
|
| 10x-6y |
| 60x+5y |
②
0.2x-
| ||||
|
60×(0.2x-
| ||||
60×(
|
| 12x-30y |
| 20x+15 |
③
| 0.8x-0.78y |
| 0.5x+0.4y |
| 50×(0.8x-0.78y) |
| 50×(0.5x+0.4y) |
| 40x-39y |
| 25x+20y |
④
| ||
0.6a+
|
20×(
| ||
20×(0.6a+
|
| 10a-8b |
| 12a+15b |
故答案为:①
| 10x-6y |
| 60x+5y |
| 12x-30y |
| 20x+15 |
| 40x-39y |
| 25x+20y |
| 10a-8b |
| 12a+15b |
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