Subtract 18/14 from 14/81, Solve 14/81

Subtract 18/14 from 14/81

1^st number: 14/81, 2^nd number: 1 4/14

14/81 - 18/14 is -631/567.

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,
14/81 = 14 × 14/81 × 14 = 196/1134
Likewise, for the 2nd fraction, since 14 × 81 = 1134,
18/14 = 18 × 81/14 × 81 = 1458/1134
Subtract the two like fractions:
196/1134 - 1458/1134 = 196 - 1458/1134 = -1262/1134
After reducing the fraction, the answer is -631/567

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