Add 56/42 and 15/12
1st number: 1 14/42, 2nd number: 1 3/12
56/42 + 15/12 is 31/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
56/42 = 56 × 2/42 × 2 = 112/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
15/12 = 15 × 7/12 × 7 = 105/84 - Add the two like fractions:
112/84 + 105/84 = 112 + 105/84 = 217/84 - 217/84 simplified gives 31/12
- So, 56/42 + 15/12 = 31/12
In mixed form: 27/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42+30/12 56/84+15/12 56/42+15/24 56/42+45/12 56/42+15/36 56/42+75/12 56/42+15/60 56/42+15/84