Add 56/12 and 15/42
1st number: 4 8/12, 2nd number: 15/42
56/12 + 15/42 is 211/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
56/12 = 56 × 7/12 × 7 = 392/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
15/42 = 15 × 2/42 × 2 = 30/84 - Add the two like fractions:
392/84 + 30/84 = 392 + 30/84 = 422/84 - 422/84 simplified gives 211/42
- So, 56/12 + 15/42 = 211/42
In mixed form: 51/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12+30/42 56/24+15/42 56/12+15/84 56/12+45/42 56/36+15/42 56/12+75/42 56/60+15/42 56/84+15/42