Subtract 8/40 from 7/8
7/8 - 8/40 is 27/40.
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,
7/8 = 7 × 5/8 × 5 = 35/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
8/40 = 8 × 1/40 × 1 = 8/40 - Subtract the two like fractions:
35/40 - 8/40 = 35 - 8/40 = 27/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/8-8/40 7/8-16/40 7/16-8/40 7/8-8/80 21/8-8/40 7/8-24/40 7/24-8/40 35/8-8/40 7/40-8/40 49/8-8/40 7/8-56/40 7/56-8/40