Subtract 30/75 from 6/18
6/18 - 30/75 is -1/15.
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,
6/18 = 6 × 25/18 × 25 = 150/450 - Likewise, for the 2nd fraction, since 75 × 6 = 450,
30/75 = 30 × 6/75 × 6 = 180/450 - Subtract the two like fractions:
150/450 - 180/450 = 150 - 180/450 = -30/450 - After reducing the fraction, the answer is -1/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/18-30/75 6/18-60/75 6/36-30/75 6/18-90/75 6/54-30/75 30/18-30/75 6/90-30/75 42/18-30/75