Subtract 63/40 from 8/15
1st number: 8/15, 2nd number: 1 23/40
8/15 - 63/40 is -25/24.
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,
8/15 = 8 × 8/15 × 8 = 64/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
63/40 = 63 × 3/40 × 3 = 189/120 - Subtract the two like fractions:
64/120 - 189/120 = 64 - 189/120 = -125/120 - After reducing the fraction, the answer is -25/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/15-63/40 8/30-63/40 8/15-63/80 24/15-63/40 8/45-63/40 40/15-63/40 8/75-63/40 56/15-63/40