题目内容
解方程:
-
x-
x=
.
| 14 |
| 15 |
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 3 |
分析:根据题意,先计算
-
x-
x=
-(
x+
x)=
-
x,然后根据减数=被减数-差,原式改为
x=
-
,然后等式的两边同时除以
即可.
| 14 |
| 15 |
| 1 |
| 4 |
| 1 |
| 6 |
| 14 |
| 15 |
| 1 |
| 4 |
| 1 |
| 6 |
| 14 |
| 15 |
| 5 |
| 12 |
| 5 |
| 12 |
| 14 |
| 15 |
| 1 |
| 3 |
| 5 |
| 12 |
解答:解:
-
x-
x=
,
-(
x+
x)=
,
-
x=
,
x=
-
,
x=
,
x÷
=
÷
,
x=
.
| 14 |
| 15 |
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 3 |
| 14 |
| 15 |
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 3 |
| 14 |
| 15 |
| 5 |
| 12 |
| 1 |
| 3 |
| 5 |
| 12 |
| 14 |
| 15 |
| 1 |
| 3 |
| 5 |
| 12 |
| 3 |
| 5 |
| 5 |
| 12 |
| 5 |
| 12 |
| 3 |
| 5 |
| 5 |
| 12 |
x=
| 36 |
| 25 |
点评:本题主要考查解方程,根据等式的性质进行解答即可.
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