Add 7/42 and 81/14
1st number: 7/42, 2nd number: 5 11/14
7/42 + 81/14 is 125/21.
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,
7/42 = 7 × 1/42 × 1 = 7/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
81/14 = 81 × 3/14 × 3 = 243/42 - Add the two like fractions:
7/42 + 243/42 = 7 + 243/42 = 250/42 - 250/42 simplified gives 125/21
- So, 7/42 + 81/14 = 125/21
In mixed form: 520/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42+81/14 7/84+81/14 7/42+81/28 21/42+81/14 7/42+81/42 35/42+81/14 7/42+81/70 49/42+81/14 7/42+81/98