Answers

Add 81/8 and 90/28

1^st number: 10 1/8, 2^nd number: 3 6/28

81/8 + 90/28 is 747/56.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 28 is 56
   
   Next, find the equivalent fraction of both fractional numbers with denominator 56
2. For the 1st fraction, since 8 × 7 = 56,
   81/8 = 81 × 7/8 × 7 = 567/56
3. Likewise, for the 2nd fraction, since 28 × 2 = 56,
   90/28 = 90 × 2/28 × 2 = 180/56
4. Add the two like fractions:
   567/56 + 180/56 = 567 + 180/56 = 747/56
5. So, 81/8 + 90/28 = 747/56
   In mixed form: 1319/56

MathStep (Works offline)

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

Related: ⁸¹/₁₆+⁹⁰/₂₈ ⁸¹/₈+⁹⁰/₅₆ ⁸¹/₂₄+⁹⁰/₂₈ ⁸¹/₈+⁹⁰/₈₄ ⁸¹/₄₀+⁹⁰/₂₈ ⁸¹/₅₆+⁹⁰/₂₈

Add Fractions Calculator