7(x-2)=0.35 3/2.5+1.2x=4.8 怎么解
问题描述:
7(x-2)=0.35 3/2.5+1.2x=4.8 怎么解
答
7(x-2)=0.35
x-2=0.35/7
x=2+0.05
x=2.05
3/2.5+1.2x=4.8
1.2+1.2x=4.8
1.2x=3.6
x=3.6/1.2
x=3