Subtract 2/8 from 3/40
3/40 - 2/8 is -7/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
3/40 = 3 × 1/40 × 1 = 3/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
2/8 = 2 × 5/8 × 5 = 10/40 - Subtract the two like fractions:
3/40 - 10/40 = 3 - 10/40 = -7/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/40-2/8 3/40-4/8 3/80-2/8 3/40-2/16 9/40-2/8 3/40-6/8 3/40-2/24 15/40-2/8 3/40-10/8 3/40-2/40 21/40-2/8 3/40-14/8 3/40-2/56