Add 18/15 and 28/54
1st number: 1 3/15, 2nd number: 28/54
18/15 + 28/54 is 232/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 15 × 18 = 270,
18/15 = 18 × 18/15 × 18 = 324/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
28/54 = 28 × 5/54 × 5 = 140/270 - Add the two like fractions:
324/270 + 140/270 = 324 + 140/270 = 464/270 - 464/270 simplified gives 232/135
- So, 18/15 + 28/54 = 232/135
In mixed form: 197/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15+28/54 18/15+56/54 18/30+28/54 54/15+28/54 18/15+84/54 18/45+28/54 90/15+28/54 18/75+28/54