Answers

Subtract 2/81 from 20/8

1^st number: 2 4/8, 2^nd number: 2/81

20/8 - 2/81 is 401/162.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 81 is 648
   
   Next, find the equivalent fraction of both fractional numbers with denominator 648
2. For the 1st fraction, since 8 × 81 = 648,
   20/8 = 20 × 81/8 × 81 = 1620/648
3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
   2/81 = 2 × 8/81 × 8 = 16/648
4. Subtract the two like fractions:
   1620/648 - 16/648 = 1620 - 16/648 = 1604/648
5. After reducing the fraction, the answer is 401/162
6. In mixed form: 277/162

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