四十九分之三十九×六十五分之五十六÷三十五分之三十六
问题描述:
四十九分之三十九×六十五分之五十六÷三十五分之三十六
答
39/49x56/65÷36/35
=39/49x56/65x35/36
=39/49x35/36x56/65
=13/7x5/12x56/65
=13/7x56/65x5/12
=8/5x5/12
=8/12
=2/3