Answers

Subtract 90/81 from 42/81

1^st number: 42/81, 2^nd number: 1 9/81

42/81 - 90/81 is -16/27.

Steps for subtracting fractions

1. Subtract the two fractions:
   42/81 - 90/81 = 42 - 90/81 = -48/81
2. After reducing the fraction, the answer is -16/27

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