Subtract 20/15 from 5/56
1st number: 5/56, 2nd number: 1 5/15
5/56 - 20/15 is -209/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 15 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
5/56 = 5 × 15/56 × 15 = 75/840 - Likewise, for the 2nd fraction, since 15 × 56 = 840,
20/15 = 20 × 56/15 × 56 = 1120/840 - Subtract the two like fractions:
75/840 - 1120/840 = 75 - 1120/840 = -1045/840 - After reducing the fraction, the answer is -209/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/56-20/15 5/56-40/15 5/56-20/30 15/56-20/15 5/56-60/15 5/56-20/45 25/56-20/15 5/56-20/75 35/56-20/15