Subtract 15/9 from 42/5
1st number: 8 2/5, 2nd number: 1 6/9
42/5 - 15/9 is 101/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
42/5 = 42 × 9/5 × 9 = 378/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
15/9 = 15 × 5/9 × 5 = 75/45 - Subtract the two like fractions:
378/45 - 75/45 = 378 - 75/45 = 303/45 - After reducing the fraction, the answer is 101/15
- In mixed form: 611/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5-15/9 42/5-30/9 42/10-15/9 42/5-15/18 42/5-45/9 42/15-15/9 42/5-15/27 42/5-75/9 42/25-15/9 42/5-15/45 42/35-15/9 42/5-15/63