Answers

Add 7/56 and 84/81

1^st number: 7/56, 2^nd number: 1 3/81

7/56 + 84/81 is 251/216.

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,
   7/56 = 7 × 81/56 × 81 = 567/4536
3. Likewise, for the 2nd fraction, since 81 × 56 = 4536,
   84/81 = 84 × 56/81 × 56 = 4704/4536
4. Add the two like fractions:
   567/4536 + 4704/4536 = 567 + 4704/4536 = 5271/4536
5. 5271/4536 simplified gives 251/216
6. So, 7/56 + 84/81 = 251/216
   In mixed form: 135/216

MathStep (Works offline)

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

Related: ¹⁴/₅₆+⁸⁴/₈₁ ²¹/₅₆+⁸⁴/₈₁ ³⁵/₅₆+⁸⁴/₈₁ ⁴⁹/₅₆+⁸⁴/₈₁

Add Fractions Calculator