Subtract 15/18 from 18/10
1st number: 1 8/10, 2nd number: 15/18
18/10 - 15/18 is 29/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
18/10 = 18 × 9/10 × 9 = 162/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
15/18 = 15 × 5/18 × 5 = 75/90 - Subtract the two like fractions:
162/90 - 75/90 = 162 - 75/90 = 87/90 - After reducing the fraction, the answer is 29/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/10-15/18 18/10-30/18 18/20-15/18 18/10-15/36 54/10-15/18 18/10-45/18 18/30-15/18 18/10-15/54 90/10-15/18 18/10-75/18 18/50-15/18 18/10-15/90 18/70-15/18