Subtract 5/45 from 7/18
7/18 - 5/45 is 5/18.
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,
7/18 = 7 × 5/18 × 5 = 35/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
5/45 = 5 × 2/45 × 2 = 10/90 - Subtract the two like fractions:
35/90 - 10/90 = 35 - 10/90 = 25/90 - After reducing the fraction, the answer is 5/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/18-5/45 7/18-10/45 7/36-5/45 7/18-5/90 21/18-5/45 7/18-15/45 7/54-5/45 35/18-5/45 7/18-25/45 7/90-5/45 49/18-5/45 7/18-35/45