Add 7/42 and 56/21
1st number: 7/42, 2nd number: 2 14/21
7/42 + 56/21 is 17/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 21 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 21 × 2 = 42,
56/21 = 56 × 2/21 × 2 = 112/42 - Add the two like fractions:
7/42 + 112/42 = 7 + 112/42 = 119/42 - 119/42 simplified gives 17/6
- So, 7/42 + 56/21 = 17/6
In mixed form: 25/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42+56/21 7/84+56/21 7/42+56/42 21/42+56/21 7/42+56/63 35/42+56/21 49/42+56/21