Subtract 3/8 from 6/40
6/40 - 3/8 is -9/40.
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,
6/40 = 6 × 1/40 × 1 = 6/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
3/8 = 3 × 5/8 × 5 = 15/40 - Subtract the two like fractions:
6/40 - 15/40 = 6 - 15/40 = -9/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/40-3/8 6/40-6/8 6/80-3/8 6/40-3/16 18/40-3/8 6/40-9/8 6/40-3/24 30/40-3/8 6/40-15/8 6/40-3/40 42/40-3/8 6/40-21/8 6/40-3/56