Subtract 27/12 from 45/6
1st number: 7 3/6, 2nd number: 2 3/12
45/6 - 27/12 is 21/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 6 × 2 = 12,
45/6 = 45 × 2/6 × 2 = 90/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
27/12 = 27 × 1/12 × 1 = 27/12 - Subtract the two like fractions:
90/12 - 27/12 = 90 - 27/12 = 63/12 - After reducing the fraction, the answer is 21/4
- In mixed form: 51/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/6-27/12 45/6-54/12 45/12-27/12 45/6-27/24 45/6-81/12 45/18-27/12 45/6-27/36 45/30-27/12 45/6-27/60 45/42-27/12 45/6-27/84