Subtract 25/80 from 1/5
1/5 - 25/80 is -9/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 5 × 16 = 80,
1/5 = 1 × 16/5 × 16 = 16/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
25/80 = 25 × 1/80 × 1 = 25/80 - Subtract the two like fractions:
16/80 - 25/80 = 16 - 25/80 = -9/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/5-25/80 1/5-50/80 1/10-25/80 3/5-25/80 1/5-75/80 1/15-25/80 1/25-25/80 7/5-25/80 1/35-25/80