Add 15/12 and 7/28
1st number: 1 3/12, 2nd number: 7/28
15/12 + 7/28 is 3/2.
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,
15/12 = 15 × 7/12 × 7 = 105/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
7/28 = 7 × 3/28 × 3 = 21/84 - Add the two like fractions:
105/84 + 21/84 = 105 + 21/84 = 126/84 - 126/84 simplified gives 3/2
- So, 15/12 + 7/28 = 3/2
In mixed form: 11/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+7/28 15/12+14/28 15/24+7/28 15/12+7/56 45/12+7/28 15/12+21/28 15/36+7/28 15/12+7/84 75/12+7/28 15/12+35/28 15/60+7/28 15/12+49/28 15/84+7/28