Add 28/56 and 42/54
28/56 + 42/54 is 23/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 54 is 1512
Next, find the equivalent fraction of both fractional numbers with denominator 1512 - For the 1st fraction, since 56 × 27 = 1512,
28/56 = 28 × 27/56 × 27 = 756/1512 - Likewise, for the 2nd fraction, since 54 × 28 = 1512,
42/54 = 42 × 28/54 × 28 = 1176/1512 - Add the two like fractions:
756/1512 + 1176/1512 = 756 + 1176/1512 = 1932/1512 - 1932/1512 simplified gives 23/18
- So, 28/56 + 42/54 = 23/18
In mixed form: 15/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/56+84/54 84/56+42/54