Subtract 3/18 from 9/84
9/84 - 3/18 is -5/84.
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,
9/84 = 9 × 3/84 × 3 = 27/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
3/18 = 3 × 14/18 × 14 = 42/252 - Subtract the two like fractions:
27/252 - 42/252 = 27 - 42/252 = -15/252 - After reducing the fraction, the answer is -5/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/84-3/18 9/84-6/18 9/84-3/36 27/84-3/18 9/84-9/18 9/84-3/54 45/84-3/18 9/84-15/18 9/84-3/90 63/84-3/18 9/84-21/18