Add 18/8 and 42/12
1st number: 2 2/8, 2nd number: 3 6/12
18/8 + 42/12 is 23/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 12 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 8 × 3 = 24,
18/8 = 18 × 3/8 × 3 = 54/24 - Likewise, for the 2nd fraction, since 12 × 2 = 24,
42/12 = 42 × 2/12 × 2 = 84/24 - Add the two like fractions:
54/24 + 84/24 = 54 + 84/24 = 138/24 - 138/24 simplified gives 23/4
- So, 18/8 + 42/12 = 23/4
In mixed form: 53/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8+42/12 18/8+84/12 18/16+42/12 18/8+42/24 54/8+42/12 18/24+42/12 18/8+42/36 90/8+42/12 18/40+42/12 18/8+42/60 18/56+42/12 18/8+42/84