Answers

Add 9/5 and 28/81

1^st number: 1 4/5, 2^nd number: 28/81

9/5 + 28/81 is 869/405.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 81 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 5 × 81 = 405,
   9/5 = 9 × 81/5 × 81 = 729/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   28/81 = 28 × 5/81 × 5 = 140/405
4. Add the two like fractions:
   729/405 + 140/405 = 729 + 140/405 = 869/405
5. So, 9/5 + 28/81 = 869/405
   In mixed form: 259/405

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ¹⁸/₅+²⁸/₈₁ ⁹/₅+⁵⁶/₈₁ ⁹/₁₀+²⁸/₈₁ ²⁷/₅+²⁸/₈₁ ⁹/₅+⁸⁴/₈₁ ⁹/₁₅+²⁸/₈₁ ⁴⁵/₅+²⁸/₈₁ ⁹/₂₅+²⁸/₈₁ ⁶³/₅+²⁸/₈₁ ⁹/₃₅+²⁸/₈₁

Add Fractions Calculator