Subtract 3/56 from 15/18
15/18 - 3/56 is 131/168.
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,
3/56 = 3 × 9/56 × 9 = 27/504 - Subtract the two like fractions:
420/504 - 27/504 = 420 - 27/504 = 393/504 - After reducing the fraction, the answer is 131/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18-3/56 15/18-6/56 15/36-3/56 45/18-3/56 15/18-9/56 15/54-3/56 75/18-3/56 15/18-15/56 15/90-3/56 15/18-21/56