Subtract 2/18 from 15/30
15/30 - 2/18 is 7/18.
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,
15/30 = 15 × 3/30 × 3 = 45/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
2/18 = 2 × 5/18 × 5 = 10/90 - Subtract the two like fractions:
45/90 - 10/90 = 45 - 10/90 = 35/90 - After reducing the fraction, the answer is 7/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 15/30-4/18 15/60-2/18 15/30-2/36 45/30-2/18 15/30-6/18 15/90-2/18 15/30-2/54 75/30-2/18 15/30-10/18 15/30-2/90 15/30-14/18