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2/3 c + 1/3 > 5c -1
2/3 c - 5 c > -1-1/3
2/3 c - 15/3c > -3/3-1/3
-13/3c > -4/3
c < -4/3 / -13/3
c < -4/3 x -3/13
c < 4/13
3 [1/3 (2c + 1) > (5c - 1) ]
1 (2c + 1) > 15c - 3
2c + 1 > 15c - 3
4 > 13c
4/13 > c