小学六年级数学题,急呀!!!!!!!!!!!急急急急急急急急急急急急急急急急急急急急急急急急!!!!!!!

2024-12-02 22:18:46
推荐回答(2个)
回答1:

(90+1/88)*1/89
=(89+1+1/88)*1/88
=(89+89/88)*1/89
=89*1/89+89/88*1*89
=1+1/88
=1又88分之1

*表示X

回答2:

(90+1/88)×1/89
=(89+1+1/88)×1/89
=(89+89/88)×1/89
=89×1/89+89/88×1/89
=1+1/88
=89/88