Add 21/63 and 21/14
1st number: 21/63, 2nd number: 1 7/14
21/63 + 21/14 is 11/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 14 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
21/63 = 21 × 2/63 × 2 = 42/126 - Likewise, for the 2nd fraction, since 14 × 9 = 126,
21/14 = 21 × 9/14 × 9 = 189/126 - Add the two like fractions:
42/126 + 189/126 = 42 + 189/126 = 231/126 - 231/126 simplified gives 11/6
- So, 21/63 + 21/14 = 11/6
In mixed form: 15/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/63+21/14 21/63+42/14 21/63+21/28 21/63+63/14 21/63+21/42 21/63+21/70 21/63+21/98