Answers

Add 49/56 and 28/81

49/56 + 28/81 is 791/648.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 81 is 4536
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4536
2. For the 1st fraction, since 56 × 81 = 4536,
   49/56 = 49 × 81/56 × 81 = 3969/4536
3. Likewise, for the 2nd fraction, since 81 × 56 = 4536,
   28/81 = 28 × 56/81 × 56 = 1568/4536
4. Add the two like fractions:
   3969/4536 + 1568/4536 = 3969 + 1568/4536 = 5537/4536
5. 5537/4536 simplified gives 791/648
6. So, 49/56 + 28/81 = 791/648
   In mixed form: 1143/648

MathStep (Works offline)

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

Related: ⁹⁸/₅₆+²⁸/₈₁ ⁴⁹/₅₆+⁵⁶/₈₁ ⁴⁹/₅₆+⁸⁴/₈₁

Add Fractions Calculator