Subtract 8/81 from 6/18
6/18 - 8/81 is 19/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 18 × 9 = 162,
6/18 = 6 × 9/18 × 9 = 54/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
8/81 = 8 × 2/81 × 2 = 16/162 - Subtract the two like fractions:
54/162 - 16/162 = 54 - 16/162 = 38/162 - After reducing the fraction, the answer is 19/81
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