Add 45/12 and 56/20
1st number: 3 9/12, 2nd number: 2 16/20
45/12 + 56/20 is 131/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
45/12 = 45 × 5/12 × 5 = 225/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
56/20 = 56 × 3/20 × 3 = 168/60 - Add the two like fractions:
225/60 + 168/60 = 225 + 168/60 = 393/60 - 393/60 simplified gives 131/20
- So, 45/12 + 56/20 = 131/20
In mixed form: 611/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+56/20 45/24+56/20 45/12+56/40 45/36+56/20 45/12+56/60 45/60+56/20 45/84+56/20