Add 54/9 and 21/45
1st number: 6 0/9, 2nd number: 21/45
54/9 + 21/45 is 97/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
54/9 = 54 × 5/9 × 5 = 270/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
21/45 = 21 × 1/45 × 1 = 21/45 - Add the two like fractions:
270/45 + 21/45 = 270 + 21/45 = 291/45 - 291/45 simplified gives 97/15
- So, 54/9 + 21/45 = 97/15
In mixed form: 67/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/9+42/45 54/18+21/45 54/9+21/90 54/9+63/45 54/27+21/45 54/45+21/45 54/63+21/45