Add 9/12 and 42/14
1st number: 9/12, 2nd number: 3 0/14
9/12 + 42/14 is 15/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 14 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
9/12 = 9 × 7/12 × 7 = 63/84 - Likewise, for the 2nd fraction, since 14 × 6 = 84,
42/14 = 42 × 6/14 × 6 = 252/84 - Add the two like fractions:
63/84 + 252/84 = 63 + 252/84 = 315/84 - 315/84 simplified gives 15/4
- So, 9/12 + 42/14 = 15/4
In mixed form: 33/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12+42/14 9/12+84/14 9/24+42/14 9/12+42/28 27/12+42/14 9/36+42/14 45/12+42/14 9/60+42/14 9/12+42/70 63/12+42/14 9/84+42/14 9/12+42/98