5分之3×9分之4×16分之5=12分之1解析:3/5×4/9×5/16=4/15×5/16=1/12
3/5×4/9×5/16=(3×4×5)/(5×9×16)=1/12
3/5×4/9×5/16=4/15×5/16=1/12
3/5*4/9*5/16=1/12