Add 56/12 and 21/5
1st number: 4 8/12, 2nd number: 4 1/5
56/12 + 21/5 is 133/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 5 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
56/12 = 56 × 5/12 × 5 = 280/60 - Likewise, for the 2nd fraction, since 5 × 12 = 60,
21/5 = 21 × 12/5 × 12 = 252/60 - Add the two like fractions:
280/60 + 252/60 = 280 + 252/60 = 532/60 - 532/60 simplified gives 133/15
- So, 56/12 + 21/5 = 133/15
In mixed form: 813/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12+42/5 56/24+21/5 56/12+21/10 56/12+63/5 56/36+21/5 56/12+21/15 56/60+21/5 56/12+21/25 56/84+21/5 56/12+21/35