Add 20/12 and 7/15
1st number: 1 8/12, 2nd number: 7/15
20/12 + 7/15 is 32/15.
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,
20/12 = 20 × 5/12 × 5 = 100/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
7/15 = 7 × 4/15 × 4 = 28/60 - Add the two like fractions:
100/60 + 28/60 = 100 + 28/60 = 128/60 - 128/60 simplified gives 32/15
- So, 20/12 + 7/15 = 32/15
In mixed form: 22/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12+7/15 20/12+14/15 20/24+7/15 20/12+7/30 60/12+7/15 20/12+21/15 20/36+7/15 20/12+7/45 20/12+35/15 20/60+7/15 20/12+7/75 20/12+49/15 20/84+7/15