Add 60/20 and 21/12
1st number: 3 0/20, 2nd number: 1 9/12
60/20 + 21/12 is 19/4.
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,
60/20 = 60 × 3/20 × 3 = 180/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
21/12 = 21 × 5/12 × 5 = 105/60 - Add the two like fractions:
180/60 + 105/60 = 180 + 105/60 = 285/60 - 285/60 simplified gives 19/4
- So, 60/20 + 21/12 = 19/4
In mixed form: 43/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/20+42/12 60/40+21/12 60/20+21/24 60/20+63/12 60/20+21/36 60/20+21/60 60/20+21/84