Subtract 8/12 from 3/63
3/63 - 8/12 is -13/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 12 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
3/63 = 3 × 4/63 × 4 = 12/252 - Likewise, for the 2nd fraction, since 12 × 21 = 252,
8/12 = 8 × 21/12 × 21 = 168/252 - Subtract the two like fractions:
12/252 - 168/252 = 12 - 168/252 = -156/252 - After reducing the fraction, the answer is -13/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/63-8/12 3/63-16/12 3/63-8/24 9/63-8/12 3/63-24/12 3/63-8/36 15/63-8/12 3/63-40/12 3/63-8/60 21/63-8/12 3/63-56/12 3/63-8/84