Subtract 72/7 from 10/12
1st number: 10/12, 2nd number: 10 2/7
10/12 - 72/7 is -397/42.
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,
10/12 = 10 × 7/12 × 7 = 70/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
72/7 = 72 × 12/7 × 12 = 864/84 - Subtract the two like fractions:
70/84 - 864/84 = 70 - 864/84 = -794/84 - After reducing the fraction, the answer is -397/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/12-72/7 10/24-72/7 10/12-72/14 30/12-72/7 10/36-72/7 10/12-72/21 50/12-72/7 10/60-72/7 10/12-72/35 70/12-72/7 10/84-72/7 10/12-72/49