Subtract 75/63 from 12/15
1st number: 12/15, 2nd number: 1 12/63
12/15 - 75/63 is -41/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 15 × 21 = 315,
12/15 = 12 × 21/15 × 21 = 252/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
75/63 = 75 × 5/63 × 5 = 375/315 - Subtract the two like fractions:
252/315 - 375/315 = 252 - 375/315 = -123/315 - After reducing the fraction, the answer is -41/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15-75/63 12/30-75/63 36/15-75/63 12/45-75/63 60/15-75/63 12/75-75/63 84/15-75/63