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2c+ c ≥46-4
3c ≥ 42
c ≥ 42/3
c ≥ 14
2c + 4 ≥ 46 - c
2c + c ≥ 46 - 4
3c ≥ 42
c ≥ 42/3
c ≥ 14
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14
Solucion.
[14 , infinito)