Answers

Add 81/98 and 63/80

81/98 + 63/80 is 6327/3920.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 80 is 3920
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3920
2. For the 1st fraction, since 98 × 40 = 3920,
   81/98 = 81 × 40/98 × 40 = 3240/3920
3. Likewise, for the 2nd fraction, since 80 × 49 = 3920,
   63/80 = 63 × 49/80 × 49 = 3087/3920
4. Add the two like fractions:
   3240/3920 + 3087/3920 = 3240 + 3087/3920 = 6327/3920
5. So, 81/98 + 63/80 = 6327/3920
   In mixed form: 12407/3920

MathStep (Works offline)

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

Related:

Add Fractions Calculator