15/14*17/9*28/3*34怎么解答
问题描述:
15/14*17/9*28/3*34怎么解答
答
14/15 × 9/17 × 3/28 × 34
= (14/15 × 3/28) × (9/17 × 34)
= 1/10 × 18
= 1又5分之4