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= 6 3/4 + 4 3/5
= 27/4 + 23/5
el mínimo común múltiplo de 4 y 5 es 20 así que convertimos las fracciones:
= (5/5)(27/4) + (4/4)(23/5)
= (5*27)/(5*4) + (4*23)/(4*5)
= 135/20 + 92/20
= (135 + 92)/20
= 227/20
Lo pasamos a entero.
Ahora si sumamos .