Answers

Subtract 27/6 from 18/21

1^st number: 18/21, 2^nd number: 4 3/6

18/21 - 27/6 is -51/14.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 6 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 21 × 2 = 42,
   18/21 = 18 × 2/21 × 2 = 36/42
3. Likewise, for the 2nd fraction, since 6 × 7 = 42,
   27/6 = 27 × 7/6 × 7 = 189/42
4. Subtract the two like fractions:
   36/42 - 189/42 = 36 - 189/42 = -153/42
5. After reducing the fraction, the answer is -51/14

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