Tolong jawab no 2dan3,,tolong yh kak

1 2/3 = 5/3
2 1/2 = 5/2

5/3 : 5/2 – 3/5 x 5/4
5/3 x 2/5 – 3/5 x 5/4
10/15 – 15/20
2/3 – 3/4
8-9/12
-1/12

Maaf klo salah, semoga membantu ^_^