Add 15/98 and 28/21
1st number: 15/98, 2nd number: 1 7/21
15/98 + 28/21 is 437/294.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 21 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 98 × 3 = 294,
15/98 = 15 × 3/98 × 3 = 45/294 - Likewise, for the 2nd fraction, since 21 × 14 = 294,
28/21 = 28 × 14/21 × 14 = 392/294 - Add the two like fractions:
45/294 + 392/294 = 45 + 392/294 = 437/294 - So, 15/98 + 28/21 = 437/294
In mixed form: 1143/294
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/98+28/21 15/98+56/21 15/98+28/42 45/98+28/21 15/98+84/21 15/98+28/63 75/98+28/21