Answers

Subtract 81/56 from 42/36

1^st number: 1 6/36, 2^nd number: 1 25/56

42/36 - 81/56 is -47/168.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 56 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 36 × 14 = 504,
   42/36 = 42 × 14/36 × 14 = 588/504
3. Likewise, for the 2nd fraction, since 56 × 9 = 504,
   81/56 = 81 × 9/56 × 9 = 729/504
4. Subtract the two like fractions:
   588/504 - 729/504 = 588 - 729/504 = -141/504
5. After reducing the fraction, the answer is -47/168

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