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Calculati si simplificatu pana obtineti fractii ireductibile. a) 4/7+19/7-8/7 b) 1+4/5 c) 3-1/7 d) 1/2-7/11+7/2-5/11 e) 12/7x1/18 f) 6/5:3/4 g) (3/7+1/14)x28/19 h) [7/5:14/15+1/2:(9/4-1 1/2)]x2/7 DAU COROANA!!!! E BINE SI DACA NU LE FACETI PE TOATE MACAR PANA LA PUNCTUL F E DE AJUNS!!!! ​