Answers

Subtract 16/81 from 42/36

1^st number: 1 6/36, 2^nd number: 16/81

42/36 - 16/81 is 157/162.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 81 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 36 × 9 = 324,
   42/36 = 42 × 9/36 × 9 = 378/324
3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
   16/81 = 16 × 4/81 × 4 = 64/324
4. Subtract the two like fractions:
   378/324 - 64/324 = 378 - 64/324 = 314/324
5. After reducing the fraction, the answer is 157/162

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