Answers

Subtract 42/15 from 25/54

1^st number: 25/54, 2^nd number: 2 12/15

25/54 - 42/15 is -631/270.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 15 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 54 × 5 = 270,
   25/54 = 25 × 5/54 × 5 = 125/270
3. Likewise, for the 2nd fraction, since 15 × 18 = 270,
   42/15 = 42 × 18/15 × 18 = 756/270
4. Subtract the two like fractions:
   125/270 - 756/270 = 125 - 756/270 = -631/270

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