Answers

Add 90/81 and 28/75

1^st number: 1 9/81, 2^nd number: 28/75

90/81 + 28/75 is 334/225.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 75 is 2025
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2025
2. For the 1st fraction, since 81 × 25 = 2025,
   90/81 = 90 × 25/81 × 25 = 2250/2025
3. Likewise, for the 2nd fraction, since 75 × 27 = 2025,
   28/75 = 28 × 27/75 × 27 = 756/2025
4. Add the two like fractions:
   2250/2025 + 756/2025 = 2250 + 756/2025 = 3006/2025
5. 3006/2025 simplified gives 334/225
6. So, 90/81 + 28/75 = 334/225
   In mixed form: 1109/225

MathStep (Works offline)

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

Related: ⁹⁰/₈₁+⁵⁶/₇₅ ⁹⁰/₈₁+⁸⁴/₇₅

Add Fractions Calculator