Subtract 28/54 from 9/20
9/20 - 28/54 is -37/540.
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,
9/20 = 9 × 27/20 × 27 = 243/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
28/54 = 28 × 10/54 × 10 = 280/540 - Subtract the two like fractions:
243/540 - 280/540 = 243 - 280/540 = -37/540
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