3x-1.5/0.2-0.2x-0.1/0.03=2.5
问题描述:
3x-1.5/0.2-0.2x-0.1/0.03=2.5
答
(3x-1.5)/0.2-(0.2x-0.1)/0.03=2.5
(30x-15)/2-(20x-10)/3=2.5
90x-45-40x+20=15
50x=15+25
50x=40
x=4/5