Add 18/9 and 42/24
1st number: 2 0/9, 2nd number: 1 18/24
18/9 + 42/24 is 15/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 24 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
18/9 = 18 × 8/9 × 8 = 144/72 - Likewise, for the 2nd fraction, since 24 × 3 = 72,
42/24 = 42 × 3/24 × 3 = 126/72 - Add the two like fractions:
144/72 + 126/72 = 144 + 126/72 = 270/72 - 270/72 simplified gives 15/4
- So, 18/9 + 42/24 = 15/4
In mixed form: 33/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/9+42/24 18/9+84/24 18/9+42/48 54/9+42/24 18/27+42/24 18/9+42/72 90/9+42/24 18/45+42/24 18/63+42/24