Add 18/4 and 84/12
1st number: 4 2/4, 2nd number: 7 0/12
18/4 + 84/12 is 23/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 4 × 3 = 12,
18/4 = 18 × 3/4 × 3 = 54/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
84/12 = 84 × 1/12 × 1 = 84/12 - Add the two like fractions:
54/12 + 84/12 = 54 + 84/12 = 138/12 - 138/12 simplified gives 23/2
- So, 18/4 + 84/12 = 23/2
In mixed form: 111/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/4+84/12 18/8+84/12 18/4+84/24 54/4+84/12 18/12+84/12 18/4+84/36 90/4+84/12 18/20+84/12 18/4+84/60 18/28+84/12