Add 3/12 and 15/28
3/12 + 15/28 is 11/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
3/12 = 3 × 7/12 × 7 = 21/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
15/28 = 15 × 3/28 × 3 = 45/84 - Add the two like fractions:
21/84 + 45/84 = 21 + 45/84 = 66/84 - 66/84 simplified gives 11/14
- So, 3/12 + 15/28 = 11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12+15/28 3/12+30/28 3/24+15/28 3/12+15/56 9/12+15/28 3/12+45/28 3/36+15/28 3/12+15/84 15/12+15/28 3/12+75/28 3/60+15/28 21/12+15/28 3/84+15/28