Subtract 18/15 from 4/12
1st number: 4/12, 2nd number: 1 3/15
4/12 - 18/15 is -13/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
4/12 = 4 × 5/12 × 5 = 20/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
18/15 = 18 × 4/15 × 4 = 72/60 - Subtract the two like fractions:
20/60 - 72/60 = 20 - 72/60 = -52/60 - After reducing the fraction, the answer is -13/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/12-18/15 4/12-36/15 4/24-18/15 4/12-18/30 4/12-54/15 4/36-18/15 4/12-18/45 20/12-18/15 4/12-90/15 4/60-18/15 4/12-18/75 28/12-18/15 4/84-18/15