Add 30/21 and 5/9
1st number: 1 9/21, 2nd number: 5/9
30/21 + 5/9 is 125/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
30/21 = 30 × 3/21 × 3 = 90/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
5/9 = 5 × 7/9 × 7 = 35/63 - Add the two like fractions:
90/63 + 35/63 = 90 + 35/63 = 125/63 - So, 30/21 + 5/9 = 125/63
In mixed form: 162/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21+5/9 30/21+10/9 30/42+5/9 30/21+5/18 90/21+5/9 30/21+15/9 30/63+5/9 30/21+5/27 30/21+25/9 30/21+5/45 30/21+35/9 30/21+5/63