Subtract 20/54 from 90/6
1st number: 15 0/6, 2nd number: 20/54
90/6 - 20/54 is 395/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 6 × 9 = 54,
90/6 = 90 × 9/6 × 9 = 810/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
20/54 = 20 × 1/54 × 1 = 20/54 - Subtract the two like fractions:
810/54 - 20/54 = 810 - 20/54 = 790/54 - After reducing the fraction, the answer is 395/27
- In mixed form: 1417/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/6-40/54 90/12-20/54 90/6-60/54 90/18-20/54 90/30-20/54 90/42-20/54