Subtract 9/90 from 15/10
1st number: 1 5/10, 2nd number: 9/90
15/10 - 9/90 is 7/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
15/10 = 15 × 9/10 × 9 = 135/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
9/90 = 9 × 1/90 × 1 = 9/90 - Subtract the two like fractions:
135/90 - 9/90 = 135 - 9/90 = 126/90 - After reducing the fraction, the answer is 7/5
- In mixed form: 12/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/10-9/90 15/10-18/90 15/20-9/90 45/10-9/90 15/10-27/90 15/30-9/90 75/10-9/90 15/10-45/90 15/50-9/90 15/10-63/90 15/70-9/90