Subtract 84/81 from 4/6, Solve 4/6 - 1 3/81 as a fraction

Subtract 84/81 from 4/6

1^st number: 4/6, 2^nd number: 1 3/81

4/6 - 84/81 is -10/27.

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

Next, find the equivalent fraction of both fractional numbers with denominator 162
For the 1st fraction, since 6 × 27 = 162,
4/6 = 4 × 27/6 × 27 = 108/162
Likewise, for the 2nd fraction, since 81 × 2 = 162,
84/81 = 84 × 2/81 × 2 = 168/162
Subtract the two like fractions:
108/162 - 168/162 = 108 - 168/162 = -60/162
After reducing the fraction, the answer is -10/27

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