Subtract 15/18 from 9/10
9/10 - 15/18 is 1/15.
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,
9/10 = 9 × 9/10 × 9 = 81/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
15/18 = 15 × 5/18 × 5 = 75/90 - Subtract the two like fractions:
81/90 - 75/90 = 81 - 75/90 = 6/90 - After reducing the fraction, the answer is 1/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/10-15/18 9/10-30/18 9/20-15/18 9/10-15/36 27/10-15/18 9/10-45/18 9/30-15/18 9/10-15/54 45/10-15/18 9/10-75/18 9/50-15/18 9/10-15/90 63/10-15/18 9/70-15/18