Subtract 15/54 from 42/5
1st number: 8 2/5, 2nd number: 15/54
42/5 - 15/54 is 731/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 5 × 54 = 270,
42/5 = 42 × 54/5 × 54 = 2268/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
15/54 = 15 × 5/54 × 5 = 75/270 - Subtract the two like fractions:
2268/270 - 75/270 = 2268 - 75/270 = 2193/270 - After reducing the fraction, the answer is 731/90
- In mixed form: 811/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5-15/54 42/5-30/54 42/10-15/54 42/5-45/54 42/15-15/54 42/5-75/54 42/25-15/54 42/35-15/54