Answers

Subtract 27/7 from 81/84

1^st number: 81/84, 2^nd number: 3 6/7

81/84 - 27/7 is -81/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 7 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 84 × 1 = 84,
   81/84 = 81 × 1/84 × 1 = 81/84
3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
   27/7 = 27 × 12/7 × 12 = 324/84
4. Subtract the two like fractions:
   81/84 - 324/84 = 81 - 324/84 = -243/84
5. After reducing the fraction, the answer is -81/28

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