Answers

Add 8/49 and 63/81

8/49 + 63/81 is 415/441.

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,
   8/49 = 8 × 81/49 × 81 = 648/3969
3. Likewise, for the 2nd fraction, since 81 × 49 = 3969,
   63/81 = 63 × 49/81 × 49 = 3087/3969
4. Add the two like fractions:
   648/3969 + 3087/3969 = 648 + 3087/3969 = 3735/3969
5. 3735/3969 simplified gives 415/441
6. So, 8/49 + 63/81 = 415/441

MathStep (Works offline)

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

Related: ¹⁶/₄₉+⁶³/₈₁ ⁸/₉₈+⁶³/₈₁ ²⁴/₄₉+⁶³/₈₁ ⁴⁰/₄₉+⁶³/₈₁ ⁵⁶/₄₉+⁶³/₈₁

Add Fractions Calculator