Add 12/42 and 21/14
1st number: 12/42, 2nd number: 1 7/14
12/42 + 21/14 is 25/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
12/42 = 12 × 1/42 × 1 = 12/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
21/14 = 21 × 3/14 × 3 = 63/42 - Add the two like fractions:
12/42 + 63/42 = 12 + 63/42 = 75/42 - 75/42 simplified gives 25/14
- So, 12/42 + 21/14 = 25/14
In mixed form: 111/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/42+21/14 12/42+42/14 12/84+21/14 12/42+21/28 36/42+21/14 12/42+63/14 12/42+21/42 60/42+21/14 12/42+21/70 84/42+21/14 12/42+21/98