Add 18/12 and 42/8
1st number: 1 6/12, 2nd number: 5 2/8
18/12 + 42/8 is 27/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 8 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 12 × 2 = 24,
18/12 = 18 × 2/12 × 2 = 36/24 - Likewise, for the 2nd fraction, since 8 × 3 = 24,
42/8 = 42 × 3/8 × 3 = 126/24 - Add the two like fractions:
36/24 + 126/24 = 36 + 126/24 = 162/24 - 162/24 simplified gives 27/4
- So, 18/12 + 42/8 = 27/4
In mixed form: 63/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12+42/8 18/12+84/8 18/24+42/8 18/12+42/16 54/12+42/8 18/36+42/8 18/12+42/24 90/12+42/8 18/60+42/8 18/12+42/40 18/84+42/8 18/12+42/56