5/9×3/10÷3/4=? 2/3×(1÷4/9)=? 23×3/8+23×5/8=? 3/6÷6/7×11=?

问题描述:

5/9×3/10÷3/4=? 2/3×(1÷4/9)=? 23×3/8+23×5/8=? 3/6÷6/7×11=?

2/9 3/2 23 231/36