Add 15/28 and 7/12
15/28 + 7/12 is 47/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
15/28 = 15 × 3/28 × 3 = 45/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
7/12 = 7 × 7/12 × 7 = 49/84 - Add the two like fractions:
45/84 + 49/84 = 45 + 49/84 = 94/84 - 94/84 simplified gives 47/42
- So, 15/28 + 7/12 = 47/42
In mixed form: 15/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/28+7/12 15/28+14/12 15/56+7/12 15/28+7/24 45/28+7/12 15/28+21/12 15/84+7/12 15/28+7/36 75/28+7/12 15/28+35/12 15/28+7/60 15/28+49/12 15/28+7/84