1.4/5-3/4= 2.82/3-15/6=

maaf no 1 salah yang benar 1/20 karena 4×5=20 3×5=15 jadi 16-15=1/20

semoga membantu

1. 4/5 - 3/4 = (16/20 - 15/20) = 1/20
2. 82/3 - 15/6 = ( 27 1/3 -2 3/6) = (27 - 2) + (1/3 - 3/6) = 25 + (2/6 - 3/6)= 24 + (8/6 - 3/6)= 24 5/6

maaf kalo salah