Subtract 4/5 from 2/8
2/8 - 4/5 is -11/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 5 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
2/8 = 2 × 5/8 × 5 = 10/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
4/5 = 4 × 8/5 × 8 = 32/40 - Subtract the two like fractions:
10/40 - 32/40 = 10 - 32/40 = -22/40 - After reducing the fraction, the answer is -11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/8-4/5 2/8-8/5 2/16-4/5 2/8-4/10 6/8-4/5 2/8-12/5 2/24-4/5 2/8-4/15 10/8-4/5 2/8-20/5 2/40-4/5 2/8-4/25 14/8-4/5 2/8-28/5 2/56-4/5 2/8-4/35