Answers

Add 90/81 and 28/27

1^st number: 1 9/81, 2^nd number: 1 1/27

90/81 + 28/27 is 58/27.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 27 is 81
   
   Next, find the equivalent fraction of both fractional numbers with denominator 81
2. For the 1st fraction, since 81 × 1 = 81,
   90/81 = 90 × 1/81 × 1 = 90/81
3. Likewise, for the 2nd fraction, since 27 × 3 = 81,
   28/27 = 28 × 3/27 × 3 = 84/81
4. Add the two like fractions:
   90/81 + 84/81 = 90 + 84/81 = 174/81
5. 174/81 simplified gives 58/27
6. So, 90/81 + 28/27 = 58/27
   In mixed form: 24/27

MathStep (Works offline)

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

Related: ⁹⁰/₈₁+⁵⁶/₂₇ ⁹⁰/₈₁+²⁸/₅₄ ⁹⁰/₈₁+⁸⁴/₂₇ ⁹⁰/₈₁+²⁸/₈₁

Add Fractions Calculator