Subtract 3/24 from 21/36
21/36 - 3/24 is 11/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 24 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 36 × 2 = 72,
21/36 = 21 × 2/36 × 2 = 42/72 - Likewise, for the 2nd fraction, since 24 × 3 = 72,
3/24 = 3 × 3/24 × 3 = 9/72 - Subtract the two like fractions:
42/72 - 9/72 = 42 - 9/72 = 33/72 - After reducing the fraction, the answer is 11/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/36-3/24 21/36-6/24 21/72-3/24 21/36-3/48 63/36-3/24 21/36-9/24 21/36-3/72 21/36-15/24 21/36-21/24