Add 27/18 and 18/84
1st number: 1 9/18, 2nd number: 18/84
27/18 + 18/84 is 12/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
27/18 = 27 × 14/18 × 14 = 378/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
18/84 = 18 × 3/84 × 3 = 54/252 - Add the two like fractions:
378/252 + 54/252 = 378 + 54/252 = 432/252 - 432/252 simplified gives 12/7
- So, 27/18 + 18/84 = 12/7
In mixed form: 15/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/18+18/84 27/18+36/84 27/36+18/84 81/18+18/84 27/18+54/84 27/54+18/84 27/18+90/84 27/90+18/84