Add 12/4 and 28/20
1st number: 3 0/4, 2nd number: 1 8/20
12/4 + 28/20 is 22/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
12/4 = 12 × 5/4 × 5 = 60/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
28/20 = 28 × 1/20 × 1 = 28/20 - Add the two like fractions:
60/20 + 28/20 = 60 + 28/20 = 88/20 - 88/20 simplified gives 22/5
- So, 12/4 + 28/20 = 22/5
In mixed form: 42/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/4+28/20 12/4+56/20 12/8+28/20 12/4+28/40 36/4+28/20 12/4+84/20 12/4+28/60 60/4+28/20 12/20+28/20 84/4+28/20 12/28+28/20