Subtract 5/8 from 8/40
8/40 - 5/8 is -17/40.
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,
8/40 = 8 × 1/40 × 1 = 8/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
5/8 = 5 × 5/8 × 5 = 25/40 - Subtract the two like fractions:
8/40 - 25/40 = 8 - 25/40 = -17/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/40-5/8 8/40-10/8 8/80-5/8 8/40-5/16 24/40-5/8 8/40-15/8 8/40-5/24 8/40-25/8 8/40-5/40 56/40-5/8 8/40-35/8 8/40-5/56