(0.5*x+2)/0.03-x=(0.3(0.5*x+2))/0.2-131/1212*(0.5*x+2)/0.03-12x=12*(0.3(0.5*x+2))/0.2-131400*(0.5*x+2)-12x=60*(0.3(0.5*x+2))-131200x+800-12x=18(0.5*x+2)-131188x+931=9x+36179x=-895x=-5
山东