Tolong pakai cara y Plies.........

4. 3/4 : 9/1 = 3/4 x 1/9 = 1/12 (d)

5. 18/18 - ( 8/18 + 1/3) =
= 18/18 - (8/18 + 6/18)
= 18/18 - 14/18
= 4/18 : 2 = 2/9 (b)