(4/7×1又1/9×4/11)÷(2/11×2/7×5/9) 简便计算 一定要有过程

Question

如题所述

Answer 1

(4/7×1又1/9×4/11)÷(2/11×2/7×5/9)
=4/7×10/9×4/11×11/2×7/2×9/5 进行分子分母约分
＝8