七分之十五除以九等于几分之几?怎么算的?
问题描述:
七分之十五除以九等于几分之几?怎么算的?
答
15/ 7 ÷ 9
= 15/7 × 1/9
= 15/63
= 5/21
七分之十五除以九等于几分之几?怎么算的?
15/ 7 ÷ 9
= 15/7 × 1/9
= 15/63
= 5/21