Subtract 8/40 from 2/15
2/15 - 8/40 is -1/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
2/15 = 2 × 8/15 × 8 = 16/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
8/40 = 8 × 3/40 × 3 = 24/120 - Subtract the two like fractions:
16/120 - 24/120 = 16 - 24/120 = -8/120 - After reducing the fraction, the answer is -1/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/15-8/40 2/15-16/40 2/30-8/40 2/15-8/80 6/15-8/40 2/15-24/40 2/45-8/40 10/15-8/40 2/75-8/40 14/15-8/40 2/15-56/40