题目内容
解方程
X+![]() ![]() | ![]() ![]() ![]() |
解:(1)x+
x=
,
x=
,
x×
=
×
,
x=
;
(2)
x÷
=
,
x=
×
,
x=
;
x×6=
×6,
x=8.
分析:(1)先计算x+
x=
x,等式的两边再同时乘
,即可得解;
(2)依据“被除数=商×除数”可将方程变形为
x=
×
=
,等式的两边再同时乘6即可得解.
点评:本题主要考查解方程,根据等式的性质进行解答即可.
![](http://thumb.1010pic.com/pic5/latex/96.png)
![](http://thumb.1010pic.com/pic5/latex/142177.png)
![](http://thumb.1010pic.com/pic5/latex/1180.png)
![](http://thumb.1010pic.com/pic5/latex/142177.png)
![](http://thumb.1010pic.com/pic5/latex/1180.png)
![](http://thumb.1010pic.com/pic5/latex/602.png)
![](http://thumb.1010pic.com/pic5/latex/142177.png)
![](http://thumb.1010pic.com/pic5/latex/602.png)
x=
![](http://thumb.1010pic.com/pic5/latex/764.png)
(2)
![](http://thumb.1010pic.com/pic5/latex/7.png)
![](http://thumb.1010pic.com/pic5/latex/729.png)
![](http://thumb.1010pic.com/pic5/latex/33.png)
![](http://thumb.1010pic.com/pic5/latex/7.png)
![](http://thumb.1010pic.com/pic5/latex/33.png)
![](http://thumb.1010pic.com/pic5/latex/729.png)
![](http://thumb.1010pic.com/pic5/latex/7.png)
![](http://thumb.1010pic.com/pic5/latex/304.png)
![](http://thumb.1010pic.com/pic5/latex/7.png)
![](http://thumb.1010pic.com/pic5/latex/304.png)
x=8.
分析:(1)先计算x+
![](http://thumb.1010pic.com/pic5/latex/96.png)
![](http://thumb.1010pic.com/pic5/latex/1180.png)
![](http://thumb.1010pic.com/pic5/latex/602.png)
(2)依据“被除数=商×除数”可将方程变形为
![](http://thumb.1010pic.com/pic5/latex/7.png)
![](http://thumb.1010pic.com/pic5/latex/33.png)
![](http://thumb.1010pic.com/pic5/latex/729.png)
![](http://thumb.1010pic.com/pic5/latex/304.png)
点评:本题主要考查解方程,根据等式的性质进行解答即可.
![](http://thumb2018.1010pic.com/images/loading.gif)
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X-![]() ![]() | ![]() ![]() | 3:0.5=x:9. |