Add 6/9 and 21/63
6/9 + 21/63 is 1/1.
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,
6/9 = 6 × 7/9 × 7 = 42/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
21/63 = 21 × 1/63 × 1 = 21/63 - Add the two like fractions:
42/63 + 21/63 = 42 + 21/63 = 63/63 - 63/63 simplified gives 1/1
- So, 6/9 + 21/63 = 1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/9+21/63 6/9+42/63 6/18+21/63 18/9+21/63 6/27+21/63 30/9+21/63 6/45+21/63 42/9+21/63 6/63+21/63