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4 1/2 + (3/5 - 1/6)
1 - convertir el mixto en fracción
9/2 - (3/5 - 1/6)
2 - Efectuar parentesis
3/5 - 1/6 = (18 - 5)/30 = 11/30 30 = mcm(5,6)
3 - Efectura resta
9/2 - 11/30
= (135 - 11)/30 30 = mcm(2,30)
= 124/30
= 4 4/30
ó = 4 2/15 RESULTADO FINAL
3/5 - 1/6 = ( 18-5)/30 = 13/30;
2+ 13/30 = (60+13)/30 = 73/30