Add 18/12 and 28/27
1st number: 1 6/12, 2nd number: 1 1/27
18/12 + 28/27 is 137/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 12 × 9 = 108,
18/12 = 18 × 9/12 × 9 = 162/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
28/27 = 28 × 4/27 × 4 = 112/108 - Add the two like fractions:
162/108 + 112/108 = 162 + 112/108 = 274/108 - 274/108 simplified gives 137/54
- So, 18/12 + 28/27 = 137/54
In mixed form: 229/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12+28/27 18/12+56/27 18/24+28/27 18/12+28/54 54/12+28/27 18/12+84/27 18/36+28/27 18/12+28/81 90/12+28/27 18/60+28/27 18/84+28/27