Add 21/6 and 7/28
1st number: 3 3/6, 2nd number: 7/28
21/6 + 7/28 is 15/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 6 × 14 = 84,
21/6 = 21 × 14/6 × 14 = 294/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
7/28 = 7 × 3/28 × 3 = 21/84 - Add the two like fractions:
294/84 + 21/84 = 294 + 21/84 = 315/84 - 315/84 simplified gives 15/4
- So, 21/6 + 7/28 = 15/4
In mixed form: 33/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6+7/28 21/6+14/28 21/12+7/28 21/6+7/56 63/6+7/28 21/6+21/28 21/18+7/28 21/6+7/84 21/6+35/28 21/30+7/28 21/6+49/28 21/42+7/28