Subtract 1/20 from 10/80
10/80 - 1/20 is 3/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
10/80 = 10 × 1/80 × 1 = 10/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
1/20 = 1 × 4/20 × 4 = 4/80 - Subtract the two like fractions:
10/80 - 4/80 = 10 - 4/80 = 6/80 - After reducing the fraction, the answer is 3/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/80-1/20 10/80-2/20 10/80-1/40 30/80-1/20 10/80-3/20 10/80-1/60 50/80-1/20 10/80-5/20 70/80-1/20 10/80-7/20