题目内容
解方程:0.12×5-
x=
.
解:0.12×5-
x=
,
0.6-
x=
,
x=0.6-
,
x=0,
x=0.
分析:在解方程0.12×5-
x=
时,先算出0.12×5=0.6,方程变为0.6-
x=
,根据减数=被减数-差,得到
x=0.6-
,等式右边等于0,故x=0.
点评:解答此题,先根据减数=被减数-差,得到得
x=0.6-
,最后利用一个数乘0等于0,直接写出未知数的值.
![](http://thumb.1010pic.com/pic5/latex/13.png)
![](http://thumb.1010pic.com/pic5/latex/14.png)
0.6-
![](http://thumb.1010pic.com/pic5/latex/13.png)
![](http://thumb.1010pic.com/pic5/latex/14.png)
![](http://thumb.1010pic.com/pic5/latex/13.png)
![](http://thumb.1010pic.com/pic5/latex/14.png)
![](http://thumb.1010pic.com/pic5/latex/13.png)
x=0.
分析:在解方程0.12×5-
![](http://thumb.1010pic.com/pic5/latex/13.png)
![](http://thumb.1010pic.com/pic5/latex/14.png)
![](http://thumb.1010pic.com/pic5/latex/13.png)
![](http://thumb.1010pic.com/pic5/latex/14.png)
![](http://thumb.1010pic.com/pic5/latex/13.png)
![](http://thumb.1010pic.com/pic5/latex/14.png)
点评:解答此题,先根据减数=被减数-差,得到得
![](http://thumb.1010pic.com/pic5/latex/13.png)
![](http://thumb.1010pic.com/pic5/latex/14.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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