Subtract 4/80 from 2/4
2/4 - 4/80 is 9/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
2/4 = 2 × 20/4 × 20 = 40/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
4/80 = 4 × 1/80 × 1 = 4/80 - Subtract the two like fractions:
40/80 - 4/80 = 40 - 4/80 = 36/80 - After reducing the fraction, the answer is 9/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/4-8/80 2/8-4/80 6/4-4/80 2/4-12/80 2/12-4/80 10/4-4/80 2/4-20/80 2/20-4/80 14/4-4/80 2/4-28/80 2/28-4/80