直接写得数:1/7÷5=?3/16÷7/21=?3/16÷8/7=?5/62÷13/5=?

问题描述:

直接写得数:1/7÷5=?3/16÷7/21=?3/16÷8/7=?5/62÷13/5=?

1/7÷5=1/35?3/16÷7/21=63/112 3/16÷8/7=21/128 5/62÷13/5=25/806