Subtract 1/40 from 1/8
1/8 - 1/40 is 1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 40 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 40 × 1 = 40,
1/40 = 1 × 1/40 × 1 = 1/40 - Subtract the two like fractions:
5/40 - 1/40 = 5 - 1/40 = 4/40 - After reducing the fraction, the answer is 1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/8-1/40 1/8-2/40 1/16-1/40 1/8-1/80 3/8-1/40 1/8-3/40 1/24-1/40 5/8-1/40 1/8-5/40 1/40-1/40 7/8-1/40 1/8-7/40 1/56-1/40