Subtract 45/54 from 20/6
1st number: 3 2/6, 2nd number: 45/54
20/6 - 45/54 is 5/2.
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,
20/6 = 20 × 9/6 × 9 = 180/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
45/54 = 45 × 1/54 × 1 = 45/54 - Subtract the two like fractions:
180/54 - 45/54 = 180 - 45/54 = 135/54 - After reducing the fraction, the answer is 5/2
- In mixed form: 21/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/6-45/54 20/6-90/54 20/12-45/54 60/6-45/54 20/18-45/54 20/30-45/54 20/42-45/54