Add 3/15 and 21/98
3/15 + 21/98 is 29/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 98 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 15 × 98 = 1470,
3/15 = 3 × 98/15 × 98 = 294/1470 - Likewise, for the 2nd fraction, since 98 × 15 = 1470,
21/98 = 21 × 15/98 × 15 = 315/1470 - Add the two like fractions:
294/1470 + 315/1470 = 294 + 315/1470 = 609/1470 - 609/1470 simplified gives 29/70
- So, 3/15 + 21/98 = 29/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/15+21/98 3/15+42/98 3/30+21/98 9/15+21/98 3/15+63/98 3/45+21/98 3/75+21/98 21/15+21/98