20又1/5-7/25/10又3/8+15又9/16

来源：学生作业学帮网编辑：学帮网时间：2024/07/07 03:08:56

(20又1/5-7/25)/(10又3/8+15又9/16)
=(101/5-7/25)/(83/8+249/16)
=(498/25)/(415/16)
=498*16/25*415
=7968/10375