Subtract 81/7 from 12/25
1st number: 12/25, 2nd number: 11 4/7
12/25 - 81/7 is -1941/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 7 is 175
Next, find the equivalent fraction of both fractional numbers with denominator 175 - For the 1st fraction, since 25 × 7 = 175,
12/25 = 12 × 7/25 × 7 = 84/175 - Likewise, for the 2nd fraction, since 7 × 25 = 175,
81/7 = 81 × 25/7 × 25 = 2025/175 - Subtract the two like fractions:
84/175 - 2025/175 = 84 - 2025/175 = -1941/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/25-81/7 12/50-81/7 12/25-81/14 36/25-81/7 12/75-81/7 12/25-81/21 60/25-81/7 12/25-81/35 84/25-81/7 12/25-81/49