11分之5×13分之6+13分之5×11分之20

2025-06-27 13:16:22
推荐回答(1个)
回答1:

5/11×6/13+5/13×20/11
=6/11×5/13﹢5/13×20/11
=﹙6/11+20/11)×5/13
=26/11×5/13
=10/11