如果题目是:(4x-1.5)/(0.5) - (5x-0.8)/0.2 = (1.2-x)/0.1则可以:2(4x-1.5) - 5(5x-0.8) =10 (1.2-x)去括号:8x-3 -25x+4=12-10x移项合并同类项:7x=-11x=-11/7