5/24g - 3/35h + 7/36g - 1/7h
-11/15e + 14/25e + 9/22f - 13/55f
3x + 6 - 9x - 18
15 - 25x - 22x - 18
-31 + 22r -67r - 37
3,1 x + 1,7x - 1,4 - 5
5a - 12 - 4,9a + 9,9a
-0,8t + 7,2 - 1,9t - 6
4/9s + 4/5 - 17/20 - 7/6s
13/15p - 9/25 + 23/20p - 7/15
-13/15 + 11/37w + 6/25 - 17/35
-5m + 12n - (6n + 2m)
8a - (7x + 2a) + 9x
-5b + (-3y + 2b) + y
(4k + 2r) - 6r + 2k
7u - (3v + 9u) + (2u - 4v)
12p - 9q - (q+p) - ( 5q - 2p)
t - (2s+ 5t) + 3t - (3s + t)
- (x-y) + 2x - (y + 2x) + (-x + 2y)
5a - ( -4a - 9b) + (-5b - 3a) + 2b
25n - 7m - (-m +n) - (-n - 3n) + 2m