Subtract 12/20 from 8/56
8/56 - 12/20 is -16/35.
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,
8/56 = 8 × 5/56 × 5 = 40/280 - Likewise, for the 2nd fraction, since 20 × 14 = 280,
12/20 = 12 × 14/20 × 14 = 168/280 - Subtract the two like fractions:
40/280 - 168/280 = 40 - 168/280 = -128/280 - After reducing the fraction, the answer is -16/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/56-12/20 8/56-24/20 8/56-12/40 24/56-12/20 8/56-36/20 8/56-12/60 40/56-12/20 8/56-60/20 8/56-84/20