Subtract 63/40 from 4/15
1st number: 4/15, 2nd number: 1 23/40
4/15 - 63/40 is -157/120.
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,
4/15 = 4 × 8/15 × 8 = 32/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
63/40 = 63 × 3/40 × 3 = 189/120 - Subtract the two like fractions:
32/120 - 189/120 = 32 - 189/120 = -157/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/15-63/40 4/30-63/40 4/15-63/80 12/15-63/40 4/45-63/40 20/15-63/40 4/75-63/40 28/15-63/40