Subtract 18/63 from 3/24
3/24 - 18/63 is -9/56.
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,
3/24 = 3 × 21/24 × 21 = 63/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
18/63 = 18 × 8/63 × 8 = 144/504 - Subtract the two like fractions:
63/504 - 144/504 = 63 - 144/504 = -81/504 - After reducing the fraction, the answer is -9/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/24-18/63 3/24-36/63 3/48-18/63 9/24-18/63 3/24-54/63 3/72-18/63 15/24-18/63 3/24-90/63 21/24-18/63