吸烟的方法有哪几种Comeon,baby~2,7250025用简便方法怎么做过程要求完整7.25/0.35-7.25/0.025用简便方法怎么做过程要求完整7.25/0.35-7.25/0.025=7.25*(0.35-0.25)=7.25*0.1=0.7257.25x0.35-7.25x0.25=7.25x(0.35-0.25)=7.25x0.1=0.725解:7.25/(0.35-7.25)/0.025=7250/25/(-6.9)=-290/6.9=-2900/693,T3任务从头到尾详细过程楼