Subtract 9/54 from 3/20
3/20 - 9/54 is -1/60.
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,
3/20 = 3 × 27/20 × 27 = 81/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
9/54 = 9 × 10/54 × 10 = 90/540 - Subtract the two like fractions:
81/540 - 90/540 = 81 - 90/540 = -9/540 - After reducing the fraction, the answer is -1/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20-9/54 3/20-18/54 3/40-9/54 9/20-9/54 3/20-27/54 3/60-9/54 15/20-9/54 3/20-45/54 21/20-9/54 3/20-63/54