Subtract 5/18 from 15/84
15/84 - 5/18 is -25/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
15/84 = 15 × 3/84 × 3 = 45/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
5/18 = 5 × 14/18 × 14 = 70/252 - Subtract the two like fractions:
45/252 - 70/252 = 45 - 70/252 = -25/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/84-5/18 15/84-10/18 15/84-5/36 45/84-5/18 15/84-15/18 15/84-5/54 75/84-5/18 15/84-25/18 15/84-5/90 15/84-35/18