Add 7/20 and 15/12
1st number: 7/20, 2nd number: 1 3/12
7/20 + 15/12 is 8/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
7/20 = 7 × 3/20 × 3 = 21/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
15/12 = 15 × 5/12 × 5 = 75/60 - Add the two like fractions:
21/60 + 75/60 = 21 + 75/60 = 96/60 - 96/60 simplified gives 8/5
- So, 7/20 + 15/12 = 8/5
In mixed form: 13/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/20+15/12 7/20+30/12 7/40+15/12 7/20+15/24 21/20+15/12 7/20+45/12 7/60+15/12 7/20+15/36 35/20+15/12 7/20+75/12 7/20+15/60 49/20+15/12 7/20+15/84