Add 81/98 and 56/80
81/98 + 56/80 is 374/245.
Steps for adding fractions
- 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 - For the 1st fraction, since 98 × 40 = 3920,
81/98 = 81 × 40/98 × 40 = 3240/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
56/80 = 56 × 49/80 × 49 = 2744/3920 - Add the two like fractions:
3240/3920 + 2744/3920 = 3240 + 2744/3920 = 5984/3920 - 5984/3920 simplified gives 374/245
- So, 81/98 + 56/80 = 374/245
In mixed form: 1129/245
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: