Add 7/63 and 8/21
7/63 + 8/21 is 31/63.
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,
8/21 = 8 × 3/21 × 3 = 24/63 - Add the two like fractions:
7/63 + 24/63 = 7 + 24/63 = 31/63 - So, 7/63 + 8/21 = 31/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/63+8/21 7/63+16/21 7/63+8/42 21/63+8/21 7/63+24/21 7/63+8/63 35/63+8/21 7/63+40/21 49/63+8/21 7/63+56/21