Subtract 15/20 from 1/8
1/8 - 15/20 is -5/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
1/8 = 1 × 5/8 × 5 = 5/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
15/20 = 15 × 2/20 × 2 = 30/40 - Subtract the two like fractions:
5/40 - 30/40 = 5 - 30/40 = -25/40 - After reducing the fraction, the answer is -5/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/8-15/20 1/8-30/20 1/16-15/20 1/8-15/40 3/8-15/20 1/8-45/20 1/24-15/20 1/8-15/60 5/8-15/20 1/8-75/20 1/40-15/20 7/8-15/20 1/56-15/20