1) 4/9 : 11/9 = 4/9 · 9/11 = 4/11 = 4 : 11
2) 0,8 : 0,03 = 80 : 3
3) 2 5/8 : 3 1/6 = 21/8 : 19/6 = 21/8 · 6/19 = (21·3)/(4·19) = 63/76 = 63 : 76
4) 3 1/2 : 3,6 = 3,5 : 3,6 = 35 : 36
119/300 и 23/60 = 115/300,
3/25 = 48/400 и 5/16 = 125/400,
29/40 = 87/120 и 17/30 = 68/120,
33/100 = 297/900 и 77/900,
2/55 = 12/330 и 7/66 = 35/330,
11/16 = 121/176 и 9/88 = 18/176