Add 1/21 and 56/18
1st number: 1/21, 2nd number: 3 2/18
1/21 + 56/18 is 199/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
1/21 = 1 × 6/21 × 6 = 6/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
56/18 = 56 × 7/18 × 7 = 392/126 - Add the two like fractions:
6/126 + 392/126 = 6 + 392/126 = 398/126 - 398/126 simplified gives 199/63
- So, 1/21 + 56/18 = 199/63
In mixed form: 310/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/21+56/18 1/42+56/18 1/21+56/36 3/21+56/18 1/63+56/18 1/21+56/54 5/21+56/18 1/21+56/90 7/21+56/18