Subtract 30/16 from 5/81, Solve 5/81

Subtract 30/16 from 5/81

1^st number: 5/81, 2^nd number: 1 14/16

5/81 - 30/16 is -1175/648.

Find the least common denominator or LCM of the two denominators:
LCM of 81 and 16 is 1296

Next, find the equivalent fraction of both fractional numbers with denominator 1296
For the 1st fraction, since 81 × 16 = 1296,
5/81 = 5 × 16/81 × 16 = 80/1296
Likewise, for the 2nd fraction, since 16 × 81 = 1296,
30/16 = 30 × 81/16 × 81 = 2430/1296
Subtract the two like fractions:
80/1296 - 2430/1296 = 80 - 2430/1296 = -2350/1296
After reducing the fraction, the answer is -1175/648

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