Add 4/20 and 28/12
1st number: 4/20, 2nd number: 2 4/12
4/20 + 28/12 is 38/15.
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,
4/20 = 4 × 3/20 × 3 = 12/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
28/12 = 28 × 5/12 × 5 = 140/60 - Add the two like fractions:
12/60 + 140/60 = 12 + 140/60 = 152/60 - 152/60 simplified gives 38/15
- So, 4/20 + 28/12 = 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: 8/20+28/12 4/20+56/12 4/40+28/12 4/20+28/24 12/20+28/12 4/20+84/12 4/60+28/12 4/20+28/36 4/20+28/60 28/20+28/12 4/20+28/84