Answers

Add 56/7 and 28/81

1^st number: 8 0/7, 2^nd number: 28/81

56/7 + 28/81 is 676/81.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 81 is 567
   
   Next, find the equivalent fraction of both fractional numbers with denominator 567
2. For the 1st fraction, since 7 × 81 = 567,
   56/7 = 56 × 81/7 × 81 = 4536/567
3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
   28/81 = 28 × 7/81 × 7 = 196/567
4. Add the two like fractions:
   4536/567 + 196/567 = 4536 + 196/567 = 4732/567
5. 4732/567 simplified gives 676/81
6. So, 56/7 + 28/81 = 676/81
   In mixed form: 828/81

MathStep (Works offline)

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

Related: ⁵⁶/₇+⁵⁶/₈₁ ⁵⁶/₁₄+²⁸/₈₁ ⁵⁶/₇+⁸⁴/₈₁ ⁵⁶/₂₁+²⁸/₈₁ ⁵⁶/₃₅+²⁸/₈₁ ⁵⁶/₄₉+²⁸/₈₁

Add Fractions Calculator