Subtract 18/54 from 10/20
10/20 - 18/54 is 1/6.
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,
10/20 = 10 × 27/20 × 27 = 270/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
18/54 = 18 × 10/54 × 10 = 180/540 - Subtract the two like fractions:
270/540 - 180/540 = 270 - 180/540 = 90/540 - After reducing the fraction, the answer is 1/6
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