Add 18/12 and 54/27
1st number: 1 6/12, 2nd number: 2 0/27
18/12 + 54/27 is 7/2.
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,
54/27 = 54 × 4/27 × 4 = 216/108 - Add the two like fractions:
162/108 + 216/108 = 162 + 216/108 = 378/108 - 378/108 simplified gives 7/2
- So, 18/12 + 54/27 = 7/2
In mixed form: 31/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12+54/27 18/24+54/27 54/12+54/27 18/36+54/27 18/12+54/81 90/12+54/27 18/60+54/27 18/84+54/27