Subtract 32/18 from 15/30
1st number: 15/30, 2nd number: 1 14/18
15/30 - 32/18 is -23/18.
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,
32/18 = 32 × 5/18 × 5 = 160/90 - Subtract the two like fractions:
45/90 - 160/90 = 45 - 160/90 = -115/90 - After reducing the fraction, the answer is -23/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 15/30-64/18 15/60-32/18 15/30-32/36 45/30-32/18 15/30-96/18 15/90-32/18 15/30-32/54 75/30-32/18 15/30-32/90