1) (x + 3 4/11) – 5 7/11 = 1 6/11
(x + 3 4/11) = 1 6/11 + 5 7/11
x + 3 4/11 = 7 2/11
x + 3 4/11 = 7 2/11 – 3 4/11
x = 3 9/11
2) (x – 1 8/9) + 3 7/9 = 4 4/9
x – 1 8/9 = 4 4/9 – 3 7/9
x – 1 8/9 = 6/9
x = 6/9 + 1 8/9
x = 2 5/9
3) 7 8/19 – (8 1/19 – x) = 3 10/19
8 1/19 – x = 7 8/19 – 3 10/19
8 1/19 – x = 3 17/19
х = 8 1/19 – 3 17/19
х = 4 3/19
4) 5 4/7 + (4 6/7 + x) = 10 3/7
4 6/7 + x = 10 3/7 – 5 4/7
4 6/7 + x = 4 6/7
х = 4 6/7 – 4 6/7
х = 0