Subtract 9/54 from 8/20
8/20 - 9/54 is 7/30.
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,
8/20 = 8 × 27/20 × 27 = 216/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
9/54 = 9 × 10/54 × 10 = 90/540 - Subtract the two like fractions:
216/540 - 90/540 = 216 - 90/540 = 126/540 - After reducing the fraction, the answer is 7/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/20-9/54 8/20-18/54 8/40-9/54 24/20-9/54 8/20-27/54 8/60-9/54 40/20-9/54 8/20-45/54 56/20-9/54 8/20-63/54