Subtract 12/54 from 15/20
15/20 - 12/54 is 19/36.
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,
12/54 = 12 × 10/54 × 10 = 120/540 - Subtract the two like fractions:
405/540 - 120/540 = 405 - 120/540 = 285/540 - After reducing the fraction, the answer is 19/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/20-12/54 15/20-24/54 15/40-12/54 45/20-12/54 15/20-36/54 15/60-12/54 75/20-12/54 15/20-60/54 15/20-84/54