Answers

Subtract 90/36 from 2/81

1^st number: 2/81, 2^nd number: 2 18/36

2/81 - 90/36 is -401/162.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 36 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 81 × 4 = 324,
   2/81 = 2 × 4/81 × 4 = 8/324
3. Likewise, for the 2nd fraction, since 36 × 9 = 324,
   90/36 = 90 × 9/36 × 9 = 810/324
4. Subtract the two like fractions:
   8/324 - 810/324 = 8 - 810/324 = -802/324
5. After reducing the fraction, the answer is -401/162

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