Subtract 9/54 from 28/20
1st number: 1 8/20, 2nd number: 9/54
28/20 - 9/54 is 37/30.
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,
28/20 = 28 × 27/20 × 27 = 756/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
9/54 = 9 × 10/54 × 10 = 90/540 - Subtract the two like fractions:
756/540 - 90/540 = 756 - 90/540 = 666/540 - After reducing the fraction, the answer is 37/30
- In mixed form: 17/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/20-9/54 28/20-18/54 28/40-9/54 84/20-9/54 28/20-27/54 28/60-9/54 28/20-45/54 28/20-63/54