Решите примеры из учебника 6 7/9+5 5/12= 7 3/5 +4 3/4= 8 9/11+4 7/8= 9 2/5-5 4/15= 7 1/8- 5 7/16= 8 3/10-7 7/15= 9 2/5-6 5/11= 6-2 5/6= 7-5/7= 12+2/3

1) 61/9+65/12 = 244/36+195/36 = 439/36 = 12 7/36
2) 38/5 + 19/4 = 152/20 + 95/20 = 247/20 = 12 7/20
3) 8 9/11 + 4 7/8 = 97/11 + 39/8 = 13 61/88
4)9 2/5 - 5 4/15 = 9 6/15 - 5 4/15 = 4 2/15
5)7 2/16 - 5 7/16 = 1 11/16
6)8 3/10 - 7 7/15 = 8 9/30 - 7 14/30 = 25/30 = 5/6
9)9 2/5 - 6 5/11 = 2 52/55
10 6 - 2 5/6 = 3 1/6
11)7 - 5/7 = 6 2/7
12) 12 2/3.