Add 7/63 and 2/21
7/63 + 2/21 is 13/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
7/63 = 7 × 1/63 × 1 = 7/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
2/21 = 2 × 3/21 × 3 = 6/63 - Add the two like fractions:
7/63 + 6/63 = 7 + 6/63 = 13/63 - So, 7/63 + 2/21 = 13/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/63+2/21 7/63+4/21 7/63+2/42 21/63+2/21 7/63+6/21 7/63+2/63 35/63+2/21 7/63+10/21 49/63+2/21 7/63+14/21