Subtract 63/40 from 3/12
1st number: 3/12, 2nd number: 1 23/40
3/12 - 63/40 is -53/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
3/12 = 3 × 10/12 × 10 = 30/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
63/40 = 63 × 3/40 × 3 = 189/120 - Subtract the two like fractions:
30/120 - 189/120 = 30 - 189/120 = -159/120 - After reducing the fraction, the answer is -53/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12-63/40 3/24-63/40 3/12-63/80 9/12-63/40 3/36-63/40 15/12-63/40 3/60-63/40 21/12-63/40 3/84-63/40