Add 18/24 and 42/12
1st number: 18/24, 2nd number: 3 6/12
18/24 + 42/12 is 17/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 12 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 24 × 1 = 24,
18/24 = 18 × 1/24 × 1 = 18/24 - Likewise, for the 2nd fraction, since 12 × 2 = 24,
42/12 = 42 × 2/12 × 2 = 84/24 - Add the two like fractions:
18/24 + 84/24 = 18 + 84/24 = 102/24 - 102/24 simplified gives 17/4
- So, 18/24 + 42/12 = 17/4
In mixed form: 41/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/24+42/12 18/24+84/12 18/48+42/12 18/24+42/24 54/24+42/12 18/72+42/12 18/24+42/36 90/24+42/12 18/24+42/60 18/24+42/84