(0.1x+0.4)/0.2-(0.2x-0.6)/0.3=1

问题描述:

(0.1x+0.4)/0.2-(0.2x-0.6)/0.3=1

(0.1x+0.4)/0.2-(0.2x-0.6)/0.3=1
3(0.1x+0.4)-2(0.2x-0.6)=0.6
0.3x+1.2-0.4x+1.2=0.6
0.1x=1.8
x=18