Question

十三分之二乘九分之五加九分之四除以二分之三怎么计算

Answer 1

十三分之二乘九分之五加九分之四除以二分之三
=2/13×5/9+4/9×2/3
=5/13×2/9+2/9×4/3
=（5/13+4/3）×2/9
=67/39×2/9
=134/351