Add 21/98 and 25/28
21/98 + 25/28 is 31/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 28 is 196
Next, find the equivalent fraction of both fractional numbers with denominator 196 - For the 1st fraction, since 98 × 2 = 196,
21/98 = 21 × 2/98 × 2 = 42/196 - Likewise, for the 2nd fraction, since 28 × 7 = 196,
25/28 = 25 × 7/28 × 7 = 175/196 - Add the two like fractions:
42/196 + 175/196 = 42 + 175/196 = 217/196 - 217/196 simplified gives 31/28
- So, 21/98 + 25/28 = 31/28
In mixed form: 13/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/98+25/28 21/98+50/28 21/98+25/56 63/98+25/28 21/98+75/28 21/98+25/84