Subtract 18/81 from 27/5, Solve 5 2/5

Subtract 18/81 from 27/5

1^st number: 5 2/5, 2^nd number: 18/81

27/5 - 18/81 is 233/45.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 81 is 405

Next, find the equivalent fraction of both fractional numbers with denominator 405
For the 1st fraction, since 5 × 81 = 405,
27/5 = 27 × 81/5 × 81 = 2187/405
Likewise, for the 2nd fraction, since 81 × 5 = 405,
18/81 = 18 × 5/81 × 5 = 90/405
Subtract the two like fractions:
2187/405 - 90/405 = 2187 - 90/405 = 2097/405
After reducing the fraction, the answer is 233/45
In mixed form: 58/45

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