Answers

Subtract 63/54 from 25/42

1^st number: 25/42, 2^nd number: 1 9/54

25/42 - 63/54 is -4/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 42 × 9 = 378,
   25/42 = 25 × 9/42 × 9 = 225/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   63/54 = 63 × 7/54 × 7 = 441/378
4. Subtract the two like fractions:
   225/378 - 441/378 = 225 - 441/378 = -216/378
5. After reducing the fraction, the answer is -4/7

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