Subtract 5/40 from 27/12
1st number: 2 3/12, 2nd number: 5/40
27/12 - 5/40 is 17/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
27/12 = 27 × 10/12 × 10 = 270/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
5/40 = 5 × 3/40 × 3 = 15/120 - Subtract the two like fractions:
270/120 - 15/120 = 270 - 15/120 = 255/120 - After reducing the fraction, the answer is 17/8
- In mixed form: 21/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/12-5/40 27/12-10/40 27/24-5/40 27/12-5/80 81/12-5/40 27/12-15/40 27/36-5/40 27/12-25/40 27/60-5/40 27/12-35/40 27/84-5/40