Subtract 45/40 from 6/8
1st number: 6/8, 2nd number: 1 5/40
6/8 - 45/40 is -3/8.
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,
6/8 = 6 × 5/8 × 5 = 30/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
45/40 = 45 × 1/40 × 1 = 45/40 - Subtract the two like fractions:
30/40 - 45/40 = 30 - 45/40 = -15/40 - After reducing the fraction, the answer is -3/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/8-45/40 6/8-90/40 6/16-45/40 6/8-45/80 18/8-45/40 6/24-45/40 30/8-45/40 6/40-45/40 42/8-45/40 6/56-45/40