15乘0.8-5x=7.2这个方程怎么做
问题描述：
15乘0.8-5x=7.2这个方程怎么做
答
15x0.8-5x=7.2
12-5x=7.2
4.8=5x
x=4.8/5=0.96
答
15乘0.8-5x=7.2
12-5x=7.2
5x=12-7.2
5x=4.8
x=0.96
答
15×0.8-5x=7.2
12-5x=7.2
5x=12-7.2
5x=4.8
x=0.96