1/21/4numerator1/31/3 +2/3simplify7/9 -2/9improperfractiononetwelfth18/10denominator3/5 *1/3properfraction12fraction1/4plus2/4mixednumberdozen4/5twofifthshalf adozenequivalentfraction01/21/4numerator1/31/3 +2/3simplify7/9 -2/9improperfractiononetwelfth18/10denominator3/5 *1/3properfraction12fraction1/4plus2/4mixednumberdozen4/5twofifthshalf adozenequivalentfraction0