Add 18/36 and 42/27
1st number: 18/36, 2nd number: 1 15/27
18/36 + 42/27 is 37/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 36 × 3 = 108,
18/36 = 18 × 3/36 × 3 = 54/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
42/27 = 42 × 4/27 × 4 = 168/108 - Add the two like fractions:
54/108 + 168/108 = 54 + 168/108 = 222/108 - 222/108 simplified gives 37/18
- So, 18/36 + 42/27 = 37/18
In mixed form: 21/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/36+84/27 18/72+42/27 18/36+42/54 54/36+42/27 18/36+42/81 90/36+42/27