(7-1 5/12): 6,7+(5,75-3 1/6): 15,5 по действием поже

(7 - 1 5/12) : 6,7 + (5,75 - 3 1/6) : 15,5 = 2/6

1) 7 - 1 5/12 = 6 12/12 - 1 5/12 = 5 7/12
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) 5 7/12 : 6,7 = 5 7/12 : 67/10 = 67/12 * 10/67 = 10/12 = 1/6
4) 2 7/12 : 15,5 = 2 7/12 : 155/10 = 31/12 : 31/2 = 31/12 * 2/31 = 2/12 = 1/6
5) 1/6 + 1/6 = 2/6