Subtract 7/56 from 21/63
21/63 - 7/56 is 5/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
21/63 = 21 × 8/63 × 8 = 168/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
7/56 = 7 × 9/56 × 9 = 63/504 - Subtract the two like fractions:
168/504 - 63/504 = 168 - 63/504 = 105/504 - After reducing the fraction, the answer is 5/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/63-7/56 21/63-14/56 21/63-21/56 21/63-35/56 21/63-49/56