(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
5x+10-2x+2=3
3x=-9
x=-3
答
(0.1x+10)-(x-2)=3 -0.9x+12=3 0.9x=9 x=10
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