Add 10/21 and 63/98
10/21 + 63/98 is 47/42.
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,
10/21 = 10 × 14/21 × 14 = 140/294 - Likewise, for the 2nd fraction, since 98 × 3 = 294,
63/98 = 63 × 3/98 × 3 = 189/294 - Add the two like fractions:
140/294 + 189/294 = 140 + 189/294 = 329/294 - 329/294 simplified gives 47/42
- So, 10/21 + 63/98 = 47/42
In mixed form: 15/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21+63/98 10/42+63/98 30/21+63/98 10/63+63/98 50/21+63/98 70/21+63/98