Subtract 28/14 from 5/81, Solve 5/81

Subtract 28/14 from 5/81

1^st number: 5/81, 2^nd number: 2 0/14

5/81 - 28/14 is -157/81.

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,
5/81 = 5 × 14/81 × 14 = 70/1134
Likewise, for the 2nd fraction, since 14 × 81 = 1134,
28/14 = 28 × 81/14 × 81 = 2268/1134
Subtract the two like fractions:
70/1134 - 2268/1134 = 70 - 2268/1134 = -2198/1134
After reducing the fraction, the answer is -157/81

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