乘开:0.6x+8-x+35=9合并:-0.4x+43=9移向:-0.4x=-34计算:x=85
0.6x+8-x+35=9,合并同类项得-0.4x=-34,解得x=85.
展开 0.6x+8-x+35=9 解得x=35
2(0.3x+4)-5(0.2x-7)=90。6x+8-x+35=9-0.4x=9-43 -0.4x=-34 x=85