Add 20/12 and 12/20
1st number: 1 8/12, 2nd number: 12/20
20/12 + 12/20 is 34/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 20 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 20 × 3 = 60,
12/20 = 12 × 3/20 × 3 = 36/60 - Add the two like fractions:
100/60 + 36/60 = 100 + 36/60 = 136/60 - 136/60 simplified gives 34/15
- So, 20/12 + 12/20 = 34/15
In mixed form: 24/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12+12/20 20/12+24/20 20/24+12/20 20/12+12/40 60/12+12/20 20/12+36/20 20/36+12/20 20/12+12/60 20/12+60/20 20/60+12/20 20/12+84/20 20/84+12/20