题目应是 0.5*x+2/0.3-x=0.3*(0.5*x)+2/0.2-11/12 求解啊！0.5*x+2/0.3-x=0.3*(0.5*x)+2/0.2-11/12 5x+20/3-x=3x+40/4-11/12 4（5x+20)-12x=3(3x+40)-1120x+80-12x=9x+120-11x=-29
