1) 7 14/15 + 2 1/15 = 10
2) 9 24/27 + 12 13/27 = 22 10/27
3) 1 - 12/19 = 7/19
4) 8 - 3 6/15 = 4 9/15 = 4 3/5
5) 12 - 11 6/11 = 4/11
6) 16 3/13 - 6 8/13 = 9 8/13
7) 13 4/9 - 2 8/9 = 11 5/9
8) 10 7/16 - 4 12/16 = 5 11/16
9) 29 49/53 - 8 49/53 = 21
10) ( 20 16/25 + 13 9/25) - ( 23 4/14 + 7 13/14) = 2 11/14
1) 20 16/25 + 13 9/25 = 34
2) 23 4/14 + 7 13/14 = 31 3/14
3) 34 - 31 3/14= 2 11/14
779-------------------------
2) 25 - х = 8 3/14
х = 25 - 8 3/14
х = 16 11/14
3) 32 - х = 9 18/35
х = 32 - 9 18/35
х = 22 17/35