Subtract 25/54 from 15/20
15/20 - 25/54 is 31/108.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 54 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
15/20 = 15 × 27/20 × 27 = 405/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
25/54 = 25 × 10/54 × 10 = 250/540 - Subtract the two like fractions:
405/540 - 250/540 = 405 - 250/540 = 155/540 - After reducing the fraction, the answer is 31/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/20-25/54 15/20-50/54 15/40-25/54 45/20-25/54 15/20-75/54 15/60-25/54 75/20-25/54