Subtract 20/6 from 15/56
1st number: 15/56, 2nd number: 3 2/6
15/56 - 20/6 is -515/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 6 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
15/56 = 15 × 3/56 × 3 = 45/168 - Likewise, for the 2nd fraction, since 6 × 28 = 168,
20/6 = 20 × 28/6 × 28 = 560/168 - Subtract the two like fractions:
45/168 - 560/168 = 45 - 560/168 = -515/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/56-20/6 15/56-40/6 15/56-20/12 45/56-20/6 15/56-60/6 15/56-20/18 75/56-20/6 15/56-20/30 15/56-20/42