Subtract 45/6 from 81/12
1st number: 6 9/12, 2nd number: 7 3/6
81/12 - 45/6 is -3/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 6 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 12 × 1 = 12,
81/12 = 81 × 1/12 × 1 = 81/12 - Likewise, for the 2nd fraction, since 6 × 2 = 12,
45/6 = 45 × 2/6 × 2 = 90/12 - Subtract the two like fractions:
81/12 - 90/12 = 81 - 90/12 = -9/12 - After reducing the fraction, the answer is -3/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/12-90/6 81/24-45/6 81/12-45/12 81/36-45/6 81/12-45/18 81/60-45/6 81/12-45/30 81/84-45/6 81/12-45/42