Add 15/12 and 3/42
1st number: 1 3/12, 2nd number: 3/42
15/12 + 3/42 is 37/28.
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,
15/12 = 15 × 7/12 × 7 = 105/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
3/42 = 3 × 2/42 × 2 = 6/84 - Add the two like fractions:
105/84 + 6/84 = 105 + 6/84 = 111/84 - 111/84 simplified gives 37/28
- So, 15/12 + 3/42 = 37/28
In mixed form: 19/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+3/42 15/12+6/42 15/24+3/42 15/12+3/84 45/12+3/42 15/12+9/42 15/36+3/42 75/12+3/42 15/12+15/42 15/60+3/42 15/12+21/42 15/84+3/42