Add 20/12 and 15/56
1st number: 1 8/12, 2nd number: 15/56
20/12 + 15/56 is 325/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 12 × 14 = 168,
20/12 = 20 × 14/12 × 14 = 280/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
15/56 = 15 × 3/56 × 3 = 45/168 - Add the two like fractions:
280/168 + 45/168 = 280 + 45/168 = 325/168 - So, 20/12 + 15/56 = 325/168
In mixed form: 1157/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12+15/56 20/12+30/56 20/24+15/56 60/12+15/56 20/12+45/56 20/36+15/56 20/12+75/56 20/60+15/56 20/84+15/56