1056.
1) х+ 5/14 = 5/6
х = 5/6 - 5/14
х = 20/24 - 10/24
х = 10/24
х = 5/12
2) 4 5/19 + х + 1 1/38 = 12 1/2
х = 12 19/38 - 4 10/38 - 1 1/38
х = 7 8/38
х = 7 4/19
3) 17 3/8 - у = 9 5/12 + 2 1/6
17 3/8 - у = 9 5/12 + 2 2/12
17 3/8 - у = 11 7/12
у = 17 3/8 - 11 7/12
у= 17 9/24 - 11 14/24
у = 16 33/24 - 11 14/24
у = 5 19/24
4) 14 9/16 - х = 6 3/4 + 1 2/5
14 9/16 - х = 6 15/20 + 1 8/20
14 9/16 - х = 7 23/20
14 9/16 - х = 8 3/20
х = 14 9/16 - 8 3/20
х = 14 45/80 - 8 12/80
х = 6 33/80