Subtract 8/56 from 15/18
15/18 - 8/56 is 29/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 18 × 28 = 504,
15/18 = 15 × 28/18 × 28 = 420/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
8/56 = 8 × 9/56 × 9 = 72/504 - Subtract the two like fractions:
420/504 - 72/504 = 420 - 72/504 = 348/504 - After reducing the fraction, the answer is 29/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18-8/56 15/18-16/56 15/36-8/56 45/18-8/56 15/18-24/56 15/54-8/56 75/18-8/56 15/18-40/56 15/90-8/56