Subtract 2/20 from 15/80
15/80 - 2/20 is 7/80.
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,
15/80 = 15 × 1/80 × 1 = 15/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
2/20 = 2 × 4/20 × 4 = 8/80 - Subtract the two like fractions:
15/80 - 8/80 = 15 - 8/80 = 7/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/80-2/20 15/80-4/20 15/80-2/40 45/80-2/20 15/80-6/20 15/80-2/60 75/80-2/20 15/80-10/20 15/80-14/20