Subtract 8/5 from 15/45
1st number: 15/45, 2nd number: 1 3/5
15/45 - 8/5 is -19/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 5 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 45 × 1 = 45,
15/45 = 15 × 1/45 × 1 = 15/45 - Likewise, for the 2nd fraction, since 5 × 9 = 45,
8/5 = 8 × 9/5 × 9 = 72/45 - Subtract the two like fractions:
15/45 - 72/45 = 15 - 72/45 = -57/45 - After reducing the fraction, the answer is -19/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/45-8/5 15/45-16/5 15/90-8/5 15/45-8/10 15/45-24/5 15/45-8/15 75/45-8/5 15/45-40/5 15/45-8/25 15/45-56/5 15/45-8/35