Add 84/18 and 27/12
1st number: 4 12/18, 2nd number: 2 3/12
84/18 + 27/12 is 83/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
84/18 = 84 × 2/18 × 2 = 168/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
27/12 = 27 × 3/12 × 3 = 81/36 - Add the two like fractions:
168/36 + 81/36 = 168 + 81/36 = 249/36 - 249/36 simplified gives 83/12
- So, 84/18 + 27/12 = 83/12
In mixed form: 611/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+54/12 84/36+27/12 84/18+27/24 84/18+81/12 84/54+27/12 84/18+27/36 84/90+27/12 84/18+27/60 84/18+27/84