Subtract 15/54 from 90/5
1st number: 18 0/5, 2nd number: 15/54
90/5 - 15/54 is 319/18.
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,
90/5 = 90 × 54/5 × 54 = 4860/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
15/54 = 15 × 5/54 × 5 = 75/270 - Subtract the two like fractions:
4860/270 - 75/270 = 4860 - 75/270 = 4785/270 - After reducing the fraction, the answer is 319/18
- In mixed form: 1713/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/5-30/54 90/10-15/54 90/5-45/54 90/15-15/54 90/5-75/54 90/25-15/54 90/35-15/54