Add 20/21 and 28/98
20/21 + 28/98 is 26/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 98 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 21 × 14 = 294,
20/21 = 20 × 14/21 × 14 = 280/294 - Likewise, for the 2nd fraction, since 98 × 3 = 294,
28/98 = 28 × 3/98 × 3 = 84/294 - Add the two like fractions:
280/294 + 84/294 = 280 + 84/294 = 364/294 - 364/294 simplified gives 26/21
- So, 20/21 + 28/98 = 26/21
In mixed form: 15/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/21+28/98 20/21+56/98 20/42+28/98 60/21+28/98 20/21+84/98 20/63+28/98