Add 20/5 and 9/12
1st number: 4 0/5, 2nd number: 9/12
20/5 + 9/12 is 19/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
20/5 = 20 × 12/5 × 12 = 240/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
9/12 = 9 × 5/12 × 5 = 45/60 - Add the two like fractions:
240/60 + 45/60 = 240 + 45/60 = 285/60 - 285/60 simplified gives 19/4
- So, 20/5 + 9/12 = 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: 40/5+9/12 20/5+18/12 20/10+9/12 20/5+9/24 60/5+9/12 20/5+27/12 20/15+9/12 20/5+9/36 20/5+45/12 20/25+9/12 20/5+9/60 20/5+63/12 20/35+9/12 20/5+9/84