4 8/10 ÷ 2 10/15= tolong jawab ya....

4. 8/10.
= 48/10 x 15/40 ( 2 10/15 = 40/15 dibalik)
= 720/400
= 1 320/400
= 1. 4 / 5

4 8/10 : 2 10/15 =
48/10 : 40/15 =
48/10 x 15/40 =
720 / 400 = 1 320/400 = 1 4/5