(987+4079×986）÷（987×4097-3110）简便计算,_其他解答

(987+4079×986）÷（987×4097-3110）简便计算,

人气：347 ℃　时间：2020-04-01 02:58:36

解答

(987+4079*986)/(987*4097-3110)=(987+4079*986)/(986*4097+4097-3110)
=(987+4079*986)/(4097*986+987)=(1+4080*986)/(1+4098*986)
=(986/986+4080*986*986/986)/(986/986+4098*986*986/986)
=(4080*987)/(4098*987)=4080/4098