Answers

Subtract 8/81 from 90/5

1^st number: 18 0/5, 2^nd number: 8/81

90/5 - 8/81 is 1450/81.

Steps for subtracting fractions

1. 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
2. For the 1st fraction, since 5 × 81 = 405,
   90/5 = 90 × 81/5 × 81 = 7290/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   8/81 = 8 × 5/81 × 5 = 40/405
4. Subtract the two like fractions:
   7290/405 - 40/405 = 7290 - 40/405 = 7250/405
5. After reducing the fraction, the answer is 1450/81
6. In mixed form: 1773/81

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