37分之20*29分之9+37分之9*29分之17简算
问题描述:
37分之20*29分之9+37分之9*29分之17简算
答
20/37×9/29+9/37×17/29
=9×[20/(37×29)]+9×[17/(37×29)]
=9×(20+17)/(37×29)
=9×37/(37×29)
=9×1/29
=9/29