题目内容
解方程.
x÷
=
(1-
)x=15.
x÷
5 |
6 |
4 |
5 |
(1-
5 |
8 |
分析:(1)方程两边同乘以
即可;
(2)先算出1-
=
,然后方程两边同除以
即可.
5 |
6 |
(2)先算出1-
5 |
8 |
3 |
8 |
3 |
8 |
解答:解:(1)x÷
=
x÷
×
=
×
x=
;
(2)(1-
)x=15
x=15
x÷
=15÷
x=40.
5 |
6 |
4 |
5 |
x÷
5 |
6 |
5 |
6 |
4 |
5 |
5 |
6 |
x=
2 |
3 |
(2)(1-
5 |
8 |
3 |
8 |
3 |
8 |
3 |
8 |
3 |
8 |
x=40.
点评:考查了解方程,根据等式的性质进行解答.
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