Add 3/20 and 80/12
1st number: 3/20, 2nd number: 6 8/12
3/20 + 80/12 is 409/60.
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,
3/20 = 3 × 3/20 × 3 = 9/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
80/12 = 80 × 5/12 × 5 = 400/60 - Add the two like fractions:
9/60 + 400/60 = 9 + 400/60 = 409/60 - So, 3/20 + 80/12 = 409/60
In mixed form: 649/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20+80/12 3/40+80/12 3/20+80/24 9/20+80/12 3/60+80/12 3/20+80/36 15/20+80/12 3/20+80/60 21/20+80/12 3/20+80/84