Subtract 25/45 from 6/18
6/18 - 25/45 is -2/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 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 45 × 2 = 90,
25/45 = 25 × 2/45 × 2 = 50/90 - Subtract the two like fractions:
30/90 - 50/90 = 30 - 50/90 = -20/90 - After reducing the fraction, the answer is -2/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/18-25/45 6/18-50/45 6/36-25/45 6/18-25/90 6/18-75/45 6/54-25/45 30/18-25/45 6/90-25/45 42/18-25/45