Add 5/21 and 3/63
5/21 + 3/63 is 2/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
5/21 = 5 × 3/21 × 3 = 15/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
3/63 = 3 × 1/63 × 1 = 3/63 - Add the two like fractions:
15/63 + 3/63 = 15 + 3/63 = 18/63 - 18/63 simplified gives 2/7
- So, 5/21 + 3/63 = 2/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21+3/63 5/21+6/63 5/42+3/63 15/21+3/63 5/21+9/63 5/63+3/63 25/21+3/63 5/21+15/63 35/21+3/63 5/21+21/63