题目内容
| 4 |
| 7 |
| 5 |
| 11 |
| 1 |
| 28 |
分析:根据等式的性质,在方程两边同时加上
x,然后化简,再加上2
,最后乘上
求解.
| 1 |
| 28 |
| 5 |
| 11 |
| 28 |
| 17 |
解答:解:
x-2
=0.25-
x,
x-2
+
x=0.25-
x+
x,
x-2
=0.25,
x-2
+2
=0.25+2
,
x×
=2
×
,
x=4
.
| 4 |
| 7 |
| 5 |
| 11 |
| 1 |
| 28 |
| 4 |
| 7 |
| 5 |
| 11 |
| 1 |
| 28 |
| 1 |
| 28 |
| 1 |
| 28 |
| 17 |
| 28 |
| 5 |
| 11 |
| 17 |
| 28 |
| 5 |
| 11 |
| 5 |
| 11 |
| 5 |
| 11 |
| 17 |
| 28 |
| 28 |
| 17 |
| 31 |
| 44 |
| 28 |
| 17 |
x=4
| 5 |
| 11 |
点评:本题考查了学生根据等式的性质解方程的能力,注意等号对齐.
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