Add 1/21 and 9/63
1/21 + 9/63 is 4/21.
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,
1/21 = 1 × 3/21 × 3 = 3/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
9/63 = 9 × 1/63 × 1 = 9/63 - Add the two like fractions:
3/63 + 9/63 = 3 + 9/63 = 12/63 - 12/63 simplified gives 4/21
- So, 1/21 + 9/63 = 4/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/21+9/63 1/21+18/63 1/42+9/63 3/21+9/63 1/21+27/63 1/63+9/63 5/21+9/63 1/21+45/63 7/21+9/63