Subtract 18/5 from 27/12
1st number: 2 3/12, 2nd number: 3 3/5
27/12 - 18/5 is -27/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 5 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
27/12 = 27 × 5/12 × 5 = 135/60 - Likewise, for the 2nd fraction, since 5 × 12 = 60,
18/5 = 18 × 12/5 × 12 = 216/60 - Subtract the two like fractions:
135/60 - 216/60 = 135 - 216/60 = -81/60 - After reducing the fraction, the answer is -27/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/12-18/5 27/12-36/5 27/24-18/5 27/12-18/10 81/12-18/5 27/12-54/5 27/36-18/5 27/12-18/15 27/12-90/5 27/60-18/5 27/12-18/25 27/84-18/5 27/12-18/35