Subtract 9/30 from 5/18
5/18 - 9/30 is -1/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
5/18 = 5 × 5/18 × 5 = 25/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
9/30 = 9 × 3/30 × 3 = 27/90 - Subtract the two like fractions:
25/90 - 27/90 = 25 - 27/90 = -2/90 - After reducing the fraction, the answer is -1/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/18-9/30 5/18-18/30 5/36-9/30 5/18-9/60 15/18-9/30 5/18-27/30 5/54-9/30 5/18-9/90 25/18-9/30 5/18-45/30 5/90-9/30 35/18-9/30 5/18-63/30