Add 21/63 and 63/9
1st number: 21/63, 2nd number: 7 0/9
21/63 + 63/9 is 22/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
21/63 = 21 × 1/63 × 1 = 21/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
63/9 = 63 × 7/9 × 7 = 441/63 - Add the two like fractions:
21/63 + 441/63 = 21 + 441/63 = 462/63 - 462/63 simplified gives 22/3
- So, 21/63 + 63/9 = 22/3
In mixed form: 71/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/63+63/9 21/63+63/18 21/63+63/27 21/63+63/45