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1/5 + 4/1 + 5/1 + (1/5 + 1/2) =
4/3 - (3/4 + 2/1) - 2/1 - 4/4 =
1/1 + 1/3 + 5/3 + 1/2 - 4/4 =
5/5 - (3/4 + 1/3) + (2/5 + 5/2) =
1/5 + (4/4 - 1/2) + 5/2 + 5/3 - 2/3 =
3/4 + 3/5 + 4/1 - (5/3 + 2/4) - 4/1 =
2/3 - (1/3 + 4/5 + 3/3) - (3/1 - 2/3) =
4/3 + 2/3 + (5/5 - 4/5) - 1/1 - 2/4 =
1/1 - (1/5 + 2/2) + (4/5 + 5/5) - 3/3 =
3/5 + (5/4 - 3/2) + 1/4 - 5/4 + 3/2 - 3/4 =
4/1 - 1/5 - 2/3 + 1/1 - 4/3 + 3/4 + 5/4 =
(3/5 - 4/1 + 3/2) + 4/2 - (4/4 - 5/3) - 1/1 =
(2/3 - 1/3) - 4/4 - 5/5 + (4/4 + 2/2) + 5/4 =
4/1 - (5/3 - 1/1) - 3/3 - (4/1 - 5/2 + 3/3) =