解:原方程: (92−2x)(60−x)=885×6 去掉方程左边的括号: 方程左边 =92(60−x)−2x(60−x) =92×60−92x−2x(60−x) =5520−92x−2x(60−x) =5520−92x−2x×60+2xx =5520−92x−120x+2xx =5520−212x+2xx ...