Subtract 75/63 from 21/24
1st number: 21/24, 2nd number: 1 12/63
21/24 - 75/63 is -53/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 24 × 21 = 504,
21/24 = 21 × 21/24 × 21 = 441/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
75/63 = 75 × 8/63 × 8 = 600/504 - Subtract the two like fractions:
441/504 - 600/504 = 441 - 600/504 = -159/504 - After reducing the fraction, the answer is -53/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24-75/63 21/48-75/63 63/24-75/63 21/72-75/63