Add 84/18 and 9/12
1st number: 4 12/18, 2nd number: 9/12
84/18 + 9/12 is 65/12.
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,
9/12 = 9 × 3/12 × 3 = 27/36 - Add the two like fractions:
168/36 + 27/36 = 168 + 27/36 = 195/36 - 195/36 simplified gives 65/12
- So, 84/18 + 9/12 = 65/12
In mixed form: 55/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+18/12 84/36+9/12 84/18+9/24 84/18+27/12 84/54+9/12 84/18+9/36 84/18+45/12 84/90+9/12 84/18+9/60 84/18+63/12 84/18+9/84