Add 42/14 and 15/12
1st number: 3 0/14, 2nd number: 1 3/12
42/14 + 15/12 is 17/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 14 × 6 = 84,
42/14 = 42 × 6/14 × 6 = 252/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
15/12 = 15 × 7/12 × 7 = 105/84 - Add the two like fractions:
252/84 + 105/84 = 252 + 105/84 = 357/84 - 357/84 simplified gives 17/4
- So, 42/14 + 15/12 = 17/4
In mixed form: 41/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/14+15/12 42/14+30/12 42/28+15/12 42/14+15/24 42/14+45/12 42/14+15/36 42/14+75/12 42/70+15/12 42/14+15/60 42/98+15/12 42/14+15/84