Subtract 81/9 from 8/12
1st number: 8/12, 2nd number: 9 0/9
8/12 - 81/9 is -25/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
8/12 = 8 × 3/12 × 3 = 24/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
81/9 = 81 × 4/9 × 4 = 324/36 - Subtract the two like fractions:
24/36 - 324/36 = 24 - 324/36 = -300/36 - After reducing the fraction, the answer is -25/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/12-81/9 8/24-81/9 8/12-81/18 24/12-81/9 8/36-81/9 8/12-81/27 40/12-81/9 8/60-81/9 8/12-81/45 56/12-81/9 8/84-81/9 8/12-81/63