Subtract 75/63 from 3/12
1st number: 3/12, 2nd number: 1 12/63
3/12 - 75/63 is -79/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 12 × 21 = 252,
3/12 = 3 × 21/12 × 21 = 63/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
75/63 = 75 × 4/63 × 4 = 300/252 - Subtract the two like fractions:
63/252 - 300/252 = 63 - 300/252 = -237/252 - After reducing the fraction, the answer is -79/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12-75/63 3/24-75/63 9/12-75/63 3/36-75/63 15/12-75/63 3/60-75/63 21/12-75/63 3/84-75/63