Add 12/4 and 27/20
1st number: 3 0/4, 2nd number: 1 7/20
12/4 + 27/20 is 87/20.
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,
27/20 = 27 × 1/20 × 1 = 27/20 - Add the two like fractions:
60/20 + 27/20 = 60 + 27/20 = 87/20 - So, 12/4 + 27/20 = 87/20
In mixed form: 47/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/4+27/20 12/4+54/20 12/8+27/20 12/4+27/40 36/4+27/20 12/4+81/20 12/4+27/60 60/4+27/20 12/20+27/20 84/4+27/20 12/28+27/20