Subtract 45/84 from 5/18
5/18 - 45/84 is -65/252.
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,
5/18 = 5 × 14/18 × 14 = 70/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
45/84 = 45 × 3/84 × 3 = 135/252 - Subtract the two like fractions:
70/252 - 135/252 = 70 - 135/252 = -65/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/18-45/84 5/18-90/84 5/36-45/84 15/18-45/84 5/54-45/84 25/18-45/84 5/90-45/84 35/18-45/84