Add 56/63 and 9/21
56/63 + 9/21 is 83/63.
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,
56/63 = 56 × 1/63 × 1 = 56/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
9/21 = 9 × 3/21 × 3 = 27/63 - Add the two like fractions:
56/63 + 27/63 = 56 + 27/63 = 83/63 - So, 56/63 + 9/21 = 83/63
In mixed form: 120/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/63+18/21 56/63+9/42 56/63+27/21 56/63+9/63 56/63+45/21 56/63+63/21