Add 21/9 and 9/63
1st number: 2 3/9, 2nd number: 9/63
21/9 + 9/63 is 52/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
21/9 = 21 × 7/9 × 7 = 147/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
9/63 = 9 × 1/63 × 1 = 9/63 - Add the two like fractions:
147/63 + 9/63 = 147 + 9/63 = 156/63 - 156/63 simplified gives 52/21
- So, 21/9 + 9/63 = 52/21
In mixed form: 210/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/9+9/63 21/9+18/63 21/18+9/63 63/9+9/63 21/9+27/63 21/27+9/63 21/9+45/63 21/45+9/63 21/63+9/63