Subtract 63/7 from 15/12
1st number: 1 3/12, 2nd number: 9 0/7
15/12 - 63/7 is -31/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
15/12 = 15 × 7/12 × 7 = 105/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
63/7 = 63 × 12/7 × 12 = 756/84 - Subtract the two like fractions:
105/84 - 756/84 = 105 - 756/84 = -651/84 - After reducing the fraction, the answer is -31/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12-63/7 15/24-63/7 15/12-63/14 45/12-63/7 15/36-63/7 15/12-63/21 75/12-63/7 15/60-63/7 15/12-63/35 15/84-63/7 15/12-63/49