8/10 - 5/7 = 56/70 - 50/70 = 6/70 или 3/35
5/10 + 1/3 = 15/30+10/30 = 25/30 или 5/6
36/100 +8/15 = 108/300 + 160/300 = 268/300 или 67/75
8/10 - 5/7 = 56/70 - 50/70 = 6/70 или 3/35
5/10 + 1/3 = 15/30+10/30 = 25/30 или 5/6
36/100 +8/15 = 108/300 + 160/300 = 268/300 или 67/75