Subtract 70/63 from 18/24
1st number: 18/24, 2nd number: 1 7/63
18/24 - 70/63 is -13/36.
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,
18/24 = 18 × 21/24 × 21 = 378/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
70/63 = 70 × 8/63 × 8 = 560/504 - Subtract the two like fractions:
378/504 - 560/504 = 378 - 560/504 = -182/504 - After reducing the fraction, the answer is -13/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/24-70/63 18/48-70/63 54/24-70/63 18/72-70/63 90/24-70/63