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2 1/4 - 3 2/3 + 2 pasemos todo a fracciones
2 1/4 = (2 x 4 + 1) / 4 = 9/4
3 2/3 = (3 x 3 + 2) / 3 = 11/3
Ahora
9/4- 11/3+ 2 = (después de hallar el deominador común)
= 27/12 - 44/12 + 24/12 = 7/12
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