Add 21/28 and 21/98
21/28 + 21/98 is 27/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 98 is 196
Next, find the equivalent fraction of both fractional numbers with denominator 196 - For the 1st fraction, since 28 × 7 = 196,
21/28 = 21 × 7/28 × 7 = 147/196 - Likewise, for the 2nd fraction, since 98 × 2 = 196,
21/98 = 21 × 2/98 × 2 = 42/196 - Add the two like fractions:
147/196 + 42/196 = 147 + 42/196 = 189/196 - 189/196 simplified gives 27/28
- So, 21/28 + 21/98 = 27/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28+21/98 21/28+42/98 21/56+21/98 63/28+21/98 21/28+63/98 21/84+21/98