Add 84/18 and 1/12
1st number: 4 12/18, 2nd number: 1/12
84/18 + 1/12 is 19/4.
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,
1/12 = 1 × 3/12 × 3 = 3/36 - Add the two like fractions:
168/36 + 3/36 = 168 + 3/36 = 171/36 - 171/36 simplified gives 19/4
- So, 84/18 + 1/12 = 19/4
In mixed form: 43/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+2/12 84/36+1/12 84/18+1/24 84/18+3/12 84/54+1/12 84/18+1/36 84/18+5/12 84/90+1/12 84/18+1/60 84/18+7/12 84/18+1/84