括号二十六分之一加七分之三加二分之一括号除以五分之二,用简便方法怎么算

2024-11-17 02:48:25
推荐回答(1个)
回答1:

由(1/26+3/7+1/2)÷2/5
=(1/26+3/7+1/2)×5/2
=5/52+15/14+5/4
=5/52+1+1/14+1+1/4
=2+2/52+1/14+1/4
=2+(14+26+91)/364
2又131/364.