Subtract 80/12 from 81/25
1st number: 3 6/25, 2nd number: 6 8/12
81/25 - 80/12 is -257/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 12 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 25 × 12 = 300,
81/25 = 81 × 12/25 × 12 = 972/300 - Likewise, for the 2nd fraction, since 12 × 25 = 300,
80/12 = 80 × 25/12 × 25 = 2000/300 - Subtract the two like fractions:
972/300 - 2000/300 = 972 - 2000/300 = -1028/300 - After reducing the fraction, the answer is -257/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/50-80/12 81/25-80/24 81/75-80/12 81/25-80/36 81/25-80/60 81/25-80/84