问题 解答题 0.30.5=x+12x-1. 答案 0.30.5=x+12x-1,0.3(2x-1)=0.5(x+1), 0.6x-0.3=0.5x+0.5,0.1x=0.8,0.1x÷0.1=0.8÷0.1, x=8.