Add 7/12 and 7/15
7/12 + 7/15 is 21/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
7/12 = 7 × 5/12 × 5 = 35/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
7/15 = 7 × 4/15 × 4 = 28/60 - Add the two like fractions:
35/60 + 28/60 = 35 + 28/60 = 63/60 - 63/60 simplified gives 21/20
- So, 7/12 + 7/15 = 21/20
In mixed form: 11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/12+7/15 7/12+14/15 7/24+7/15 7/12+7/30 21/12+7/15 7/12+21/15 7/36+7/15 7/12+7/45 35/12+7/15 7/12+35/15 7/60+7/15 7/12+7/75 49/12+7/15 7/12+49/15 7/84+7/15