Subtract 21/24 from 9/36
9/36 - 21/24 is -5/8.
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,
9/36 = 9 × 2/36 × 2 = 18/72 - Likewise, for the 2nd fraction, since 24 × 3 = 72,
21/24 = 21 × 3/24 × 3 = 63/72 - Subtract the two like fractions:
18/72 - 63/72 = 18 - 63/72 = -45/72 - After reducing the fraction, the answer is -5/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/36-21/24 9/36-42/24 9/72-21/24 9/36-21/48 27/36-21/24 9/36-63/24 9/36-21/72 45/36-21/24 63/36-21/24