Answers

Subtract 81/28 from 42/56

1^st number: 42/56, 2^nd number: 2 25/28

42/56 - 81/28 is -15/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 28 is 56
   
   Next, find the equivalent fraction of both fractional numbers with denominator 56
2. For the 1st fraction, since 56 × 1 = 56,
   42/56 = 42 × 1/56 × 1 = 42/56
3. Likewise, for the 2nd fraction, since 28 × 2 = 56,
   81/28 = 81 × 2/28 × 2 = 162/56
4. Subtract the two like fractions:
   42/56 - 162/56 = 42 - 162/56 = -120/56
5. After reducing the fraction, the answer is -15/7

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