Subtract 75/80 from 5/20
5/20 - 75/80 is -11/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
5/20 = 5 × 4/20 × 4 = 20/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
75/80 = 75 × 1/80 × 1 = 75/80 - Subtract the two like fractions:
20/80 - 75/80 = 20 - 75/80 = -55/80 - After reducing the fraction, the answer is -11/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20-75/80 5/40-75/80 15/20-75/80 5/60-75/80 25/20-75/80 35/20-75/80