Add 2/20 and 81/12
1st number: 2/20, 2nd number: 6 9/12
2/20 + 81/12 is 137/20.
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,
2/20 = 2 × 3/20 × 3 = 6/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
81/12 = 81 × 5/12 × 5 = 405/60 - Add the two like fractions:
6/60 + 405/60 = 6 + 405/60 = 411/60 - 411/60 simplified gives 137/20
- So, 2/20 + 81/12 = 137/20
In mixed form: 617/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/20+81/12 2/40+81/12 2/20+81/24 6/20+81/12 2/60+81/12 2/20+81/36 10/20+81/12 2/20+81/60 14/20+81/12 2/20+81/84