题目内容
解方程,我没问题!
x×
×
=4
x-
x=
.
x×
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| 7 |
x-
| 1 |
| 6 |
| 3 |
| 4 |
分析:(1)先计算出
×
=
,再根据等式性质,两边同时除以
解答,
(2)先计算出x-
x=
x,再根据等式性质,两边同时除以
解答.
| 1 |
| 3 |
| 6 |
| 7 |
| 2 |
| 7 |
| 2 |
| 7 |
(2)先计算出x-
| 1 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
解答:解:(1)x×
×
=4,
x×
=4,
x×
÷
=4÷
,
x=14,
(2)x-
x=
,
x=
,
x÷
=
÷
,
x=
.
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| 3 |
| 6 |
| 7 |
x×
| 2 |
| 7 |
x×
| 2 |
| 7 |
| 2 |
| 7 |
| 2 |
| 7 |
x=14,
(2)x-
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| 6 |
| 3 |
| 4 |
| 5 |
| 6 |
| 3 |
| 4 |
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| 5 |
| 6 |
| 3 |
| 4 |
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| 6 |
x=
| 9 |
| 10 |
点评:本题主要考查学生根据等式性质解方程能力掌握.
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