Subtract 81/84 from 14/18
14/18 - 81/84 is -47/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
14/18 = 14 × 14/18 × 14 = 196/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
81/84 = 81 × 3/84 × 3 = 243/252 - Subtract the two like fractions:
196/252 - 243/252 = 196 - 243/252 = -47/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/18-81/84 14/36-81/84 42/18-81/84 14/54-81/84 70/18-81/84 14/90-81/84 98/18-81/84