Subtract 25/45 from 2/18
2/18 - 25/45 is -4/9.
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,
2/18 = 2 × 5/18 × 5 = 10/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
25/45 = 25 × 2/45 × 2 = 50/90 - Subtract the two like fractions:
10/90 - 50/90 = 10 - 50/90 = -40/90 - After reducing the fraction, the answer is -4/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/18-25/45 2/18-50/45 2/36-25/45 2/18-25/90 6/18-25/45 2/18-75/45 2/54-25/45 10/18-25/45 2/90-25/45 14/18-25/45