Subtract 27/40 from 5/8
5/8 - 27/40 is -1/20.
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,
5/8 = 5 × 5/8 × 5 = 25/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
27/40 = 27 × 1/40 × 1 = 27/40 - Subtract the two like fractions:
25/40 - 27/40 = 25 - 27/40 = -2/40 - After reducing the fraction, the answer is -1/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/8-27/40 5/8-54/40 5/16-27/40 5/8-27/80 15/8-27/40 5/8-81/40 5/24-27/40 25/8-27/40 5/40-27/40 35/8-27/40 5/56-27/40