Add 1/42 and 28/12
1st number: 1/42, 2nd number: 2 4/12
1/42 + 28/12 is 33/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
1/42 = 1 × 2/42 × 2 = 2/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
28/12 = 28 × 7/12 × 7 = 196/84 - Add the two like fractions:
2/84 + 196/84 = 2 + 196/84 = 198/84 - 198/84 simplified gives 33/14
- So, 1/42 + 28/12 = 33/14
In mixed form: 25/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/42+28/12 1/42+56/12 1/84+28/12 1/42+28/24 3/42+28/12 1/42+84/12 1/42+28/36 5/42+28/12 1/42+28/60 7/42+28/12 1/42+28/84