题目内容
解下列分式方程(组):
(1)
+
=
+
;
(2)
.
(1)
| 5x-96 |
| x-19 |
| x-8 |
| x-9 |
| 4x-19 |
| x-6 |
| 2x-21 |
| x-8 |
(2)
|
(1)原式可化为
(5-
)+(1+
)=(4+
)+(2+
),
即
-
=
+
,
∴
=
,
∴(x-6)(x-8)=(x-9)(x-19),
即14x=123,
∴x=
,
经检验x=
是原方程的解,
故x=
;
(2)原方程可化为
+
=3①,
+
=4②,
+
=5③,
①+②+③得
+
+
=6④,
④-①得
c=
,
④-②得
a=
,
④-③得
b=1,
经检验a=
,b=1,c=
是原方程的解,
∴
.
(5-
| 1 |
| x-19 |
| 1 |
| x-9 |
| 5 |
| x-6 |
| 5 |
| x-8 |
即
| 1 |
| x-9 |
| 1 |
| x-19 |
| 5 |
| x-6 |
| 5 |
| x-8 |
∴
| -10 |
| (x-9)(x-19) |
| -10 |
| (x-6)(x-8) |
∴(x-6)(x-8)=(x-9)(x-19),
即14x=123,
∴x=
| 123 |
| 14 |
经检验x=
| 123 |
| 14 |
故x=
| 123 |
| 14 |
(2)原方程可化为
| 1 |
| a |
| 1 |
| b |
| 1 |
| b |
| 1 |
| c |
| 1 |
| c |
| 1 |
| a |
①+②+③得
| 1 |
| a |
| 1 |
| b |
| 1 |
| c |
④-①得
c=
| 1 |
| 3 |
④-②得
a=
| 1 |
| 2 |
④-③得
b=1,
经检验a=
| 1 |
| 2 |
| 1 |
| 3 |
∴
|
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