Add 18/27 and 27/12
1st number: 18/27, 2nd number: 2 3/12
18/27 + 27/12 is 35/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 12 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 27 × 4 = 108,
18/27 = 18 × 4/27 × 4 = 72/108 - Likewise, for the 2nd fraction, since 12 × 9 = 108,
27/12 = 27 × 9/12 × 9 = 243/108 - Add the two like fractions:
72/108 + 243/108 = 72 + 243/108 = 315/108 - 315/108 simplified gives 35/12
- So, 18/27 + 27/12 = 35/12
In mixed form: 211/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/27+27/12 18/27+54/12 18/54+27/12 18/27+27/24 54/27+27/12 18/27+81/12 18/81+27/12 18/27+27/36 90/27+27/12 18/27+27/60 18/27+27/84