Add 20/63 and 1/21
20/63 + 1/21 is 23/63.
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,
20/63 = 20 × 1/63 × 1 = 20/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
1/21 = 1 × 3/21 × 3 = 3/63 - Add the two like fractions:
20/63 + 3/63 = 20 + 3/63 = 23/63 - So, 20/63 + 1/21 = 23/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/63+1/21 20/63+2/21 20/63+1/42 60/63+1/21 20/63+3/21 20/63+1/63 20/63+5/21 20/63+7/21