(500 x-300)/(x-500)=1.2怎么算
问题描述:
(500 x-300)/(x-500)=1.2怎么算
答
(500 x-300)/(x-500)=1.2
(500 x-300)/(x-500)=6/5
5(500 x-300)=6(x-500)
2500x-1500=6x-3000
x(2500-6)=1500-3000
x=-1500/2494
x=-0.6