Subtract 18/6 from 2/81, Solve 2/81

Subtract 18/6 from 2/81

1^st number: 2/81, 2^nd number: 3 0/6

2/81 - 18/6 is -241/81.

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,
2/81 = 2 × 2/81 × 2 = 4/162
Likewise, for the 2nd fraction, since 6 × 27 = 162,
18/6 = 18 × 27/6 × 27 = 486/162
Subtract the two like fractions:
4/162 - 486/162 = 4 - 486/162 = -482/162
After reducing the fraction, the answer is -241/81

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