Add 21/28 and 18/14
1st number: 21/28, 2nd number: 1 4/14
21/28 + 18/14 is 57/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 14 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
21/28 = 21 × 1/28 × 1 = 21/28 - Likewise, for the 2nd fraction, since 14 × 2 = 28,
18/14 = 18 × 2/14 × 2 = 36/28 - Add the two like fractions:
21/28 + 36/28 = 21 + 36/28 = 57/28 - So, 21/28 + 18/14 = 57/28
In mixed form: 21/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28+18/14 21/28+36/14 21/56+18/14 21/28+18/28 63/28+18/14 21/28+54/14 21/84+18/14 21/28+18/42 21/28+90/14 21/28+18/70 21/28+18/98