Add 28/12 and 4/20
1st number: 2 4/12, 2nd number: 4/20
28/12 + 4/20 is 38/15.
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,
28/12 = 28 × 5/12 × 5 = 140/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
4/20 = 4 × 3/20 × 3 = 12/60 - Add the two like fractions:
140/60 + 12/60 = 140 + 12/60 = 152/60 - 152/60 simplified gives 38/15
- So, 28/12 + 4/20 = 38/15
In mixed form: 28/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12+4/20 28/12+8/20 28/24+4/20 28/12+4/40 84/12+4/20 28/12+12/20 28/36+4/20 28/12+4/60 28/60+4/20 28/12+28/20 28/84+4/20