Add 7/63 and 4/21
7/63 + 4/21 is 19/63.
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,
4/21 = 4 × 3/21 × 3 = 12/63 - Add the two like fractions:
7/63 + 12/63 = 7 + 12/63 = 19/63 - So, 7/63 + 4/21 = 19/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/63+4/21 7/63+8/21 7/63+4/42 21/63+4/21 7/63+12/21 7/63+4/63 35/63+4/21 7/63+20/21 49/63+4/21 7/63+28/21