Subtract 2/20 from 7/80
7/80 - 2/20 is -1/80.
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,
7/80 = 7 × 1/80 × 1 = 7/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
2/20 = 2 × 4/20 × 4 = 8/80 - Subtract the two like fractions:
7/80 - 8/80 = 7 - 8/80 = -1/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/80-2/20 7/80-4/20 7/80-2/40 21/80-2/20 7/80-6/20 7/80-2/60 35/80-2/20 7/80-10/20 49/80-2/20 7/80-14/20