(x+1)/0.2 - (x+3)/0.01=50

问题描述:

(x+1)/0.2 - (x+3)/0.01=50

(x+1)/0.2 - (x+3)/0.01=50
x+1-20(x+3)=10
x+1-20x-60=10
19x=-69
x=-69/19