Subtract 2/5 from 6/18
6/18 - 2/5 is -1/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 5 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
6/18 = 6 × 5/18 × 5 = 30/90 - Likewise, for the 2nd fraction, since 5 × 18 = 90,
2/5 = 2 × 18/5 × 18 = 36/90 - Subtract the two like fractions:
30/90 - 36/90 = 30 - 36/90 = -6/90 - 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: 12/18-2/5 6/18-4/5 6/36-2/5 6/18-2/10 6/18-6/5 6/54-2/5 6/18-2/15 30/18-2/5 6/18-10/5 6/90-2/5 6/18-2/25 42/18-2/5 6/18-14/5 6/18-2/35