Subtract 25/36 from 21/24
21/24 - 25/36 is 13/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 36 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
21/24 = 21 × 3/24 × 3 = 63/72 - Likewise, for the 2nd fraction, since 36 × 2 = 72,
25/36 = 25 × 2/36 × 2 = 50/72 - Subtract the two like fractions:
63/72 - 50/72 = 63 - 50/72 = 13/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24-25/36 21/24-50/36 21/48-25/36 21/24-25/72 63/24-25/36 21/24-75/36 21/72-25/36