Add 28/2 and 21/54
1st number: 14 0/2, 2nd number: 21/54
28/2 + 21/54 is 259/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 2 × 27 = 54,
28/2 = 28 × 27/2 × 27 = 756/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
21/54 = 21 × 1/54 × 1 = 21/54 - Add the two like fractions:
756/54 + 21/54 = 756 + 21/54 = 777/54 - 777/54 simplified gives 259/18
- So, 28/2 + 21/54 = 259/18
In mixed form: 147/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/2+21/54 28/2+42/54 28/4+21/54 84/2+21/54 28/2+63/54 28/6+21/54 28/10+21/54 28/14+21/54