(987+4079×986)÷(987×4097-3110) 简便计算,

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/30 04:03:44

(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