Выполните сложение 1) 5 11/12 + 2 13/30,2) 4 4/15 + 9 7/12,3) 7 5/6 + 4 3/4,4) 13 7/80 + 6 2/45,5)10 13/24 + 8 2/15,6) 2 9/70 + 11 3/14,7) 3 7/12 + 5 2/3,8) 15 7/10 + 3 2/15,9) 6 7/24 + 7 5/8. прошу помогите(
1) 5 55/60 + 2 26/60 = 7 81/60 = 8 21/60 = 8 7/20 2) 4 16/60 + 9 35/60 = 13 51/60 3) 7 10/12 + 4 9/12 = 11 19/12 = 12 7/12 4) 13 315/3600 + 6 160/3600 = 19 475/3600 = 19 19/144 5) 10 65/120 + 8 16/120 = 18 81/120 = 18 27/40 6) 2 18/140 + 11 30/140 = 13 29/140 7) 3 7/12 + 5 8/12 = 8 15/12 = 9 3/12 = 9 1/4 8) 15 21/30 + 3 4/30 = 18 25/30 = 18 5/6 9) 6 7/24 + 7 15/24 = 13 22/24 = 13 11/12