Subtract 18/30 from 15/10
1st number: 1 5/10, 2nd number: 18/30
15/10 - 18/30 is 9/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
15/10 = 15 × 3/10 × 3 = 45/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
18/30 = 18 × 1/30 × 1 = 18/30 - Subtract the two like fractions:
45/30 - 18/30 = 45 - 18/30 = 27/30 - After reducing the fraction, the answer is 9/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/10-18/30 15/10-36/30 15/20-18/30 15/10-18/60 45/10-18/30 15/10-54/30 15/30-18/30 15/10-18/90 75/10-18/30 15/10-90/30 15/50-18/30 15/70-18/30