Answers

Add 56/81 and 48/20

1^st number: 56/81, 2^nd number: 2 8/20

56/81 + 48/20 is 1252/405.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 20 is 1620
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1620
2. For the 1st fraction, since 81 × 20 = 1620,
   56/81 = 56 × 20/81 × 20 = 1120/1620
3. Likewise, for the 2nd fraction, since 20 × 81 = 1620,
   48/20 = 48 × 81/20 × 81 = 3888/1620
4. Add the two like fractions:
   1120/1620 + 3888/1620 = 1120 + 3888/1620 = 5008/1620
5. 5008/1620 simplified gives 1252/405
6. So, 56/81 + 48/20 = 1252/405
   In mixed form: 337/405

MathStep (Works offline)

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

Related: ⁵⁶/₈₁+⁹⁶/₂₀ ⁵⁶/₈₁+⁴⁸/₄₀ ⁵⁶/₈₁+⁴⁸/₆₀

Add Fractions Calculator