Answers

Subtract 1/81 from 42/4

1^st number: 10 2/4, 2^nd number: 1/81

42/4 - 1/81 is 1699/162.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 81 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 4 × 81 = 324,
   42/4 = 42 × 81/4 × 81 = 3402/324
3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
   1/81 = 1 × 4/81 × 4 = 4/324
4. Subtract the two like fractions:
   3402/324 - 4/324 = 3402 - 4/324 = 3398/324
5. After reducing the fraction, the answer is 1699/162
6. In mixed form: 1079/162

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