Add 54/18 and 42/24
1st number: 3 0/18, 2nd number: 1 18/24
54/18 + 42/24 is 19/4.
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,
54/18 = 54 × 4/18 × 4 = 216/72 - Likewise, for the 2nd fraction, since 24 × 3 = 72,
42/24 = 42 × 3/24 × 3 = 126/72 - Add the two like fractions:
216/72 + 126/72 = 216 + 126/72 = 342/72 - 342/72 simplified gives 19/4
- So, 54/18 + 42/24 = 19/4
In mixed form: 43/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/18+84/24 54/36+42/24 54/18+42/48 54/18+42/72 54/90+42/24