Answers

Subtract 49/27 from 15/42

1^st number: 15/42, 2^nd number: 1 22/27

15/42 - 49/27 is -551/378.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 27 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 42 × 9 = 378,
   15/42 = 15 × 9/42 × 9 = 135/378
3. Likewise, for the 2nd fraction, since 27 × 14 = 378,
   49/27 = 49 × 14/27 × 14 = 686/378
4. Subtract the two like fractions:
   135/378 - 686/378 = 135 - 686/378 = -551/378

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