Answers

Add 90/56 and 81/12

1^st number: 1 34/56, 2^nd number: 6 9/12

90/56 + 81/12 is 117/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 12 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 56 × 3 = 168,
   90/56 = 90 × 3/56 × 3 = 270/168
3. Likewise, for the 2nd fraction, since 12 × 14 = 168,
   81/12 = 81 × 14/12 × 14 = 1134/168
4. Add the two like fractions:
   270/168 + 1134/168 = 270 + 1134/168 = 1404/168
5. 1404/168 simplified gives 117/14
6. So, 90/56 + 81/12 = 117/14
   In mixed form: 85/14

MathStep (Works offline)

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

Related: ⁹⁰/₅₆+⁸¹/₂₄ ⁹⁰/₅₆+⁸¹/₃₆ ⁹⁰/₅₆+⁸¹/₆₀ ⁹⁰/₅₆+⁸¹/₈₄

Add Fractions Calculator