Add 7/98 and 10/21
7/98 + 10/21 is 23/42.
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,
7/98 = 7 × 3/98 × 3 = 21/294 - Likewise, for the 2nd fraction, since 21 × 14 = 294,
10/21 = 10 × 14/21 × 14 = 140/294 - Add the two like fractions:
21/294 + 140/294 = 21 + 140/294 = 161/294 - 161/294 simplified gives 23/42
- So, 7/98 + 10/21 = 23/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/98+10/21 7/98+20/21 7/98+10/42 21/98+10/21 7/98+30/21 7/98+10/63 35/98+10/21 7/98+50/21 49/98+10/21 7/98+70/21