Subtract 15/54 from 20/8
1st number: 2 4/8, 2nd number: 15/54
20/8 - 15/54 is 20/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 54 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 8 × 27 = 216,
20/8 = 20 × 27/8 × 27 = 540/216 - Likewise, for the 2nd fraction, since 54 × 4 = 216,
15/54 = 15 × 4/54 × 4 = 60/216 - Subtract the two like fractions:
540/216 - 60/216 = 540 - 60/216 = 480/216 - After reducing the fraction, the answer is 20/9
- In mixed form: 22/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/8-15/54 20/8-30/54 20/16-15/54 60/8-15/54 20/8-45/54 20/24-15/54 20/8-75/54 20/40-15/54 20/56-15/54