Subtract 15/75 from 1/18
1/18 - 15/75 is -13/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 75 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 18 × 25 = 450,
1/18 = 1 × 25/18 × 25 = 25/450 - Likewise, for the 2nd fraction, since 75 × 6 = 450,
15/75 = 15 × 6/75 × 6 = 90/450 - Subtract the two like fractions:
25/450 - 90/450 = 25 - 90/450 = -65/450 - After reducing the fraction, the answer is -13/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/18-15/75 1/18-30/75 1/36-15/75 3/18-15/75 1/18-45/75 1/54-15/75 5/18-15/75 1/90-15/75 7/18-15/75