Subtract 8/20 from 20/56
20/56 - 8/20 is -3/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 20 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
20/56 = 20 × 5/56 × 5 = 100/280 - Likewise, for the 2nd fraction, since 20 × 14 = 280,
8/20 = 8 × 14/20 × 14 = 112/280 - Subtract the two like fractions:
100/280 - 112/280 = 100 - 112/280 = -12/280 - After reducing the fraction, the answer is -3/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/56-8/20 20/56-16/20 20/56-8/40 60/56-8/20 20/56-24/20 20/56-8/60 20/56-40/20 20/56-56/20