Subtract 20/14 from 1/81, Solve 1/81

Subtract 20/14 from 1/81

1^st number: 1/81, 2^nd number: 1 6/14

1/81 - 20/14 is -803/567.

Find the least common denominator or LCM of the two denominators:
LCM of 81 and 14 is 1134

Next, find the equivalent fraction of both fractional numbers with denominator 1134
For the 1st fraction, since 81 × 14 = 1134,
1/81 = 1 × 14/81 × 14 = 14/1134
Likewise, for the 2nd fraction, since 14 × 81 = 1134,
20/14 = 20 × 81/14 × 81 = 1620/1134
Subtract the two like fractions:
14/1134 - 1620/1134 = 14 - 1620/1134 = -1606/1134
After reducing the fraction, the answer is -803/567

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