Add 20/3 and 21/54
1st number: 6 2/3, 2nd number: 21/54
20/3 + 21/54 is 127/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 3 × 18 = 54,
20/3 = 20 × 18/3 × 18 = 360/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
21/54 = 21 × 1/54 × 1 = 21/54 - Add the two like fractions:
360/54 + 21/54 = 360 + 21/54 = 381/54 - 381/54 simplified gives 127/18
- So, 20/3 + 21/54 = 127/18
In mixed form: 71/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/3+21/54 20/3+42/54 20/6+21/54 60/3+21/54 20/3+63/54 20/9+21/54 20/15+21/54 20/21+21/54