(0.1x+0.2/0.02)-(x-1/0.5)=3 解方程
问题描述:
(0.1x+0.2/0.02)-(x-1/0.5)=3 解方程
答
(0.1x+0.2/0.02)-(x-1/0.5)=3
(10x+20/2)-(10x-10)/5=3
5x+10-2x+2=3
3x=3-12
3x=-9
x=-3