25,2 : 3 1/2 + (6 - 4 1/3) * 0,6 = 8 1/5 = 8,2
1) 6 - 4 1/3 = 5 3/3 - 4 1/3 = 1 2/3
2) 25,2 : 3 1/2 = 25 2/10 : 3 1/2 = 252/10 : 7/2 = 252/10 * 2/7 = 36/5 = 7 1/5
3) 1 2/3 * 0,6 = 5/3 * 6/10 = 1/1 * 2/2 = 1
4) 7 1/5 + 1 = 8 1/5
(7 - 1 5/12) : 6,7 + (5,75 - 3 1/6) : 15,5 = 1
1) 7 - 1 5/12 = 7/1 - 17/12 = 84/12 - 17/12 = 67/12
2) 5,75 - 3 1/6 = 5 75/100 - 3 1/6 = 5 3/4 - 3 1/6 = 5 9/12 - 3 2/12 = 2 7/12
3) 67/12 : 6,7 = 67/12 : 67/10 = 67/12 * 10/67 = 1/6 * 5/1 = 5/6
4) 2 7/12 : 15,5 = 31/12 : 155/10 = 31/12 * 10/155 = 1/6 * 5/5 = 1/6
5) 5/6 + 1/6 = 6/6 = 1