Add 14/28 and 36/21
1st number: 14/28, 2nd number: 1 15/21
14/28 + 36/21 is 31/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
14/28 = 14 × 3/28 × 3 = 42/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
36/21 = 36 × 4/21 × 4 = 144/84 - Add the two like fractions:
42/84 + 144/84 = 42 + 144/84 = 186/84 - 186/84 simplified gives 31/14
- So, 14/28 + 36/21 = 31/14
In mixed form: 23/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28+72/21 14/56+36/21 14/28+36/42 42/28+36/21 14/84+36/21 14/28+36/63 70/28+36/21 98/28+36/21