(12/7+24/19)÷24/19

问题描述:

(12/7+24/19)÷24/19
5/16×(8/5+4/5)×8/1
(9/5-18/5)÷9/5
{16/15+(16/7-8/3)}÷4/1
9/4÷{5/4-(5/1+3/1)}

(12/7+24/19)÷24/19=(12/7+24/19)×19/24=12/7×19/24+24/19×19/24=19/14+1=1又19/145/16×(8/5+4/5)×8/1=5/16×8/1×(8/5+4/5)=5/2×8/5+5/2×4/5=4/1+2/1=4/3(9/5-18/5)÷9/5=(9/5-18/5)×5/9=9/5×...