(987+4079×986)÷(987×4097-3110) 简便计算,

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(987+4079×986)÷(987×4097-3110)简便计算,(987+4079×986)÷(987×4097-3110)简便计算,(987+4079×986)÷(987×4097-3110)

(987+4079×986)÷(987×4097-3110) 简便计算,
(987+4079×986)÷(987×4097-3110) 简便计算,

(987+4079×986)÷(987×4097-3110) 简便计算,
(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