解:(1)2.4×1.5+1.2x=7.2,
3.6+1.2x=7.2,
3.6+1.2x-3.6=7.2-3.6,
1.2x=3.6,
1.2x÷1.2=3.6÷1.2,
x=3;
(2)
![](http://thumb.1010pic.com/pic5/latex/168.png)
:
![](http://thumb.1010pic.com/pic5/latex/155.png)
=x:9,
![](http://thumb.1010pic.com/pic5/latex/155.png)
x=
![](http://thumb.1010pic.com/pic5/latex/168.png)
×9,
![](http://thumb.1010pic.com/pic5/latex/155.png)
x=6,
![](http://thumb.1010pic.com/pic5/latex/155.png)
x
![](http://thumb.1010pic.com/pic5/latex/28308.png)
=6
![](http://thumb.1010pic.com/pic5/latex/28308.png)
,
x=7.2.
分析:(1)先化简方程,再依据等式的性质,方程两边同时减3.6,再同时除以1.2求解,
(2)先根据比例基本性质,两内项之积等于两外项之积,化简方程,再依据等式的性质,方程两边同时除以
![](http://thumb.1010pic.com/pic5/latex/155.png)
求解.
点评:本题主要考查学生依据等式的性质以及比例的基本性质解方程的能力,解答时注意对齐等号.