Answers

Add 81/56 and 16/20

1^st number: 1 25/56, 2^nd number: 16/20

81/56 + 16/20 is 629/280.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 20 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 56 × 5 = 280,
   81/56 = 81 × 5/56 × 5 = 405/280
3. Likewise, for the 2nd fraction, since 20 × 14 = 280,
   16/20 = 16 × 14/20 × 14 = 224/280
4. Add the two like fractions:
   405/280 + 224/280 = 405 + 224/280 = 629/280
5. So, 81/56 + 16/20 = 629/280
   In mixed form: 269/280

MathStep (Works offline)

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

Related: ⁸¹/₅₆+³²/₂₀ ⁸¹/₅₆+¹⁶/₄₀ ⁸¹/₅₆+⁴⁸/₂₀ ⁸¹/₅₆+¹⁶/₆₀ ⁸¹/₅₆+⁸⁰/₂₀

Add Fractions Calculator