Question

7/15÷13/4+5/13×4/15+4/15,请问这题怎么算,谢谢.

Answer 1

7/15÷13/4＋5/13×4/15＋4/15

＝7/15×4/13＋5/13×4/15＋4/15

＝4/15×﹙7/13＋5/13＋1﹚

＝ 4/15×25/13

＝20/39