Subtract 20/6 from 5/81, Solve 5/81

Subtract 20/6 from 5/81

1^st number: 5/81, 2^nd number: 3 2/6

5/81 - 20/6 is -265/81.

Find the least common denominator or LCM of the two denominators:
LCM of 81 and 6 is 162

Next, find the equivalent fraction of both fractional numbers with denominator 162
For the 1st fraction, since 81 × 2 = 162,
5/81 = 5 × 2/81 × 2 = 10/162
Likewise, for the 2nd fraction, since 6 × 27 = 162,
20/6 = 20 × 27/6 × 27 = 540/162
Subtract the two like fractions:
10/162 - 540/162 = 10 - 540/162 = -530/162
After reducing the fraction, the answer is -265/81

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