Answers

Add 28/49 and 9/81

28/49 + 9/81 is 43/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 81 is 3969
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3969
2. For the 1st fraction, since 49 × 81 = 3969,
   28/49 = 28 × 81/49 × 81 = 2268/3969
3. Likewise, for the 2nd fraction, since 81 × 49 = 3969,
   9/81 = 9 × 49/81 × 49 = 441/3969
4. Add the two like fractions:
   2268/3969 + 441/3969 = 2268 + 441/3969 = 2709/3969
5. 2709/3969 simplified gives 43/63
6. So, 28/49 + 9/81 = 43/63

MathStep (Works offline)

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

Related: ⁵⁶/₄₉+⁹/₈₁ ²⁸/₄₉+¹⁸/₈₁ ²⁸/₉₈+⁹/₈₁ ⁸⁴/₄₉+⁹/₈₁ ²⁸/₄₉+²⁷/₈₁ ²⁸/₄₉+⁴⁵/₈₁ ²⁸/₄₉+⁶³/₈₁

Add Fractions Calculator