Subtract 18/60 from 3/12
3/12 - 18/60 is -1/20.
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,
3/12 = 3 × 5/12 × 5 = 15/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
18/60 = 18 × 1/60 × 1 = 18/60 - Subtract the two like fractions:
15/60 - 18/60 = 15 - 18/60 = -3/60 - After reducing the fraction, the answer is -1/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12-18/60 3/12-36/60 3/24-18/60 9/12-18/60 3/12-54/60 3/36-18/60 15/12-18/60 3/12-90/60 3/60-18/60 21/12-18/60 3/84-18/60