Answers

Subtract 21/12 from 8/54

1^st number: 8/54, 2^nd number: 1 9/12

8/54 - 21/12 is -173/108.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 12 is 108
   
   Next, find the equivalent fraction of both fractional numbers with denominator 108
2. For the 1st fraction, since 54 × 2 = 108,
   8/54 = 8 × 2/54 × 2 = 16/108
3. Likewise, for the 2nd fraction, since 12 × 9 = 108,
   21/12 = 21 × 9/12 × 9 = 189/108
4. Subtract the two like fractions:
   16/108 - 189/108 = 16 - 189/108 = -173/108

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