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Suppose that the
0
1
35\frac{3}{5}53
−35-\frac{3}{5}−53
15\frac{1}{5}51
67\frac{6}{7}76
−67-\frac{6}{7}−76
12\frac{1}{2}21
−17-\frac{1}{7}−71
17\frac{1}{7}71
-1
3
−32-\frac{3}{2}−23
32\frac{3}{2}23
−12-\frac{1}{2}−21
5
−2-2−2
222
It is done.