Add 21/15 and 48/9
1st number: 1 6/15, 2nd number: 5 3/9
21/15 + 48/9 is 101/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
21/15 = 21 × 3/15 × 3 = 63/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
48/9 = 48 × 5/9 × 5 = 240/45 - Add the two like fractions:
63/45 + 240/45 = 63 + 240/45 = 303/45 - 303/45 simplified gives 101/15
- So, 21/15 + 48/9 = 101/15
In mixed form: 611/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/15+48/9 21/15+96/9 21/30+48/9 21/15+48/18 63/15+48/9 21/45+48/9 21/15+48/27 21/75+48/9 21/15+48/45 21/15+48/63