Add 27/18 and 42/24
1st number: 1 9/18, 2nd number: 1 18/24
27/18 + 42/24 is 13/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 24 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
27/18 = 27 × 4/18 × 4 = 108/72 - Likewise, for the 2nd fraction, since 24 × 3 = 72,
42/24 = 42 × 3/24 × 3 = 126/72 - Add the two like fractions:
108/72 + 126/72 = 108 + 126/72 = 234/72 - 234/72 simplified gives 13/4
- So, 27/18 + 42/24 = 13/4
In mixed form: 31/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/18+42/24 27/18+84/24 27/36+42/24 27/18+42/48 81/18+42/24 27/54+42/24 27/18+42/72 27/90+42/24