Subtract 21/18 from 54/24
1st number: 2 6/24, 2nd number: 1 3/18
54/24 - 21/18 is 13/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
54/24 = 54 × 3/24 × 3 = 162/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
21/18 = 21 × 4/18 × 4 = 84/72 - Subtract the two like fractions:
162/72 - 84/72 = 162 - 84/72 = 78/72 - After reducing the fraction, the answer is 13/12
- In mixed form: 11/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/24-42/18 54/48-21/18 54/24-21/36 54/24-63/18 54/72-21/18 54/24-21/54 54/24-21/90