Answers

Subtract 9/84 from 27/42

27/42 - 9/84 is 15/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 42 × 2 = 84,
   27/42 = 27 × 2/42 × 2 = 54/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   9/84 = 9 × 1/84 × 1 = 9/84
4. Subtract the two like fractions:
   54/84 - 9/84 = 54 - 9/84 = 45/84
5. After reducing the fraction, the answer is 15/28

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