Subtract 9/56 from 21/24
21/24 - 9/56 is 5/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
21/24 = 21 × 7/24 × 7 = 147/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
9/56 = 9 × 3/56 × 3 = 27/168 - Subtract the two like fractions:
147/168 - 27/168 = 147 - 27/168 = 120/168 - After reducing the fraction, the answer is 5/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24-9/56 21/24-18/56 21/48-9/56 63/24-9/56 21/24-27/56 21/72-9/56 21/24-45/56 21/24-63/56