Answers

Subtract 27/7 from 15/42

1^st number: 15/42, 2^nd number: 3 6/7

15/42 - 27/7 is -7/2.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 7 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 42 × 1 = 42,
   15/42 = 15 × 1/42 × 1 = 15/42
3. Likewise, for the 2nd fraction, since 7 × 6 = 42,
   27/7 = 27 × 6/7 × 6 = 162/42
4. Subtract the two like fractions:
   15/42 - 162/42 = 15 - 162/42 = -147/42
5. After reducing the fraction, the answer is -7/2

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