简算(90+1/88)*1/98
问题描述:
简算(90+1/88)*1/98
答
(90+1/88)*1/98应该是(90+1/88)*1/89吧
(90+1/88)*1/89
=(89+1+1/88)*1/89
=(89+89/88)*1/89
=89*(1+1/88)*1/89
=1+1/88
=89/88