How do you simplify 4/5+2/9? Algebra Properties of Real Numbers Addition of Rational Numbers 1 Answer Suren Abreu Nov 23, 2016 46/45 or 1 1/45 Explanation: 4/5+2/9 The LCM (Lowest Common Multiple) of 5 and 9 is 45. ((4xx9)+(2xx5))/45 (36+10)/45 46/45 or 1 1/45 Answer link Related questions How do you add rational numbers? How do you write fractions with a common denominator? How do you write mixed fractions into improper fractions? How do you write 11 2/3 into an improper fraction? How do you add 4 1/7 + 2/7? How do you add 3/5+2/8? How do you change fractions into decimals? How do you find the sum of 2.5+2.57+3.1? How do you calculate 18/12 - 7/9? How do you write 5 into an improper fraction? See all questions in Addition of Rational Numbers Impact of this question 3843 views around the world You can reuse this answer Creative Commons License