Subtract 15/40 from 8/24
8/24 - 15/40 is -1/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
8/24 = 8 × 5/24 × 5 = 40/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
15/40 = 15 × 3/40 × 3 = 45/120 - Subtract the two like fractions:
40/120 - 45/120 = 40 - 45/120 = -5/120 - After reducing the fraction, the answer is -1/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/24-15/40 8/24-30/40 8/48-15/40 8/24-15/80 8/24-45/40 8/72-15/40 40/24-15/40 8/24-75/40 56/24-15/40