Add 20/27 and 84/12
1st number: 20/27, 2nd number: 7 0/12
20/27 + 84/12 is 209/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 12 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 27 × 4 = 108,
20/27 = 20 × 4/27 × 4 = 80/108 - Likewise, for the 2nd fraction, since 12 × 9 = 108,
84/12 = 84 × 9/12 × 9 = 756/108 - Add the two like fractions:
80/108 + 756/108 = 80 + 756/108 = 836/108 - 836/108 simplified gives 209/27
- So, 20/27 + 84/12 = 209/27
In mixed form: 720/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/27+84/12 20/54+84/12 20/27+84/24 60/27+84/12 20/81+84/12 20/27+84/36 20/27+84/60