Subtract 3/18 from 9/30
9/30 - 3/18 is 2/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
9/30 = 9 × 3/30 × 3 = 27/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
3/18 = 3 × 5/18 × 5 = 15/90 - Subtract the two like fractions:
27/90 - 15/90 = 27 - 15/90 = 12/90 - After reducing the fraction, the answer is 2/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/30-3/18 9/30-6/18 9/60-3/18 9/30-3/36 27/30-3/18 9/30-9/18 9/90-3/18 9/30-3/54 45/30-3/18 9/30-15/18 9/30-3/90 63/30-3/18 9/30-21/18