Subtract 30/18 from 2/15
1st number: 2/15, 2nd number: 1 12/18
2/15 - 30/18 is -23/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
2/15 = 2 × 6/15 × 6 = 12/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
30/18 = 30 × 5/18 × 5 = 150/90 - Subtract the two like fractions:
12/90 - 150/90 = 12 - 150/90 = -138/90 - After reducing the fraction, the answer is -23/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/15-30/18 2/15-60/18 2/30-30/18 2/15-30/36 6/15-30/18 2/15-90/18 2/45-30/18 2/15-30/54 10/15-30/18 2/75-30/18 2/15-30/90 14/15-30/18