Subtract 10/81 from 20/54
20/54 - 10/81 is 20/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 54 × 3 = 162,
20/54 = 20 × 3/54 × 3 = 60/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
10/81 = 10 × 2/81 × 2 = 20/162 - Subtract the two like fractions:
60/162 - 20/162 = 60 - 20/162 = 40/162 - After reducing the fraction, the answer is 20/81
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