Subtract 27/60 from 18/12
1st number: 1 6/12, 2nd number: 27/60
18/12 - 27/60 is 21/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
18/12 = 18 × 5/12 × 5 = 90/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
27/60 = 27 × 1/60 × 1 = 27/60 - Subtract the two like fractions:
90/60 - 27/60 = 90 - 27/60 = 63/60 - After reducing the fraction, the answer is 21/20
- In mixed form: 11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12-27/60 18/12-54/60 18/24-27/60 54/12-27/60 18/12-81/60 18/36-27/60 90/12-27/60 18/60-27/60 18/84-27/60