Add 21/63 and 5/9
21/63 + 5/9 is 8/9.
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,
5/9 = 5 × 7/9 × 7 = 35/63 - Add the two like fractions:
21/63 + 35/63 = 21 + 35/63 = 56/63 - 56/63 simplified gives 8/9
- So, 21/63 + 5/9 = 8/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/63+5/9 21/63+10/9 21/63+5/18 21/63+15/9 21/63+5/27 21/63+25/9 21/63+5/45 21/63+35/9 21/63+5/63