Answers

Subtract 10/54 from 12/42

12/42 - 10/54 is 19/189.

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,
   12/42 = 12 × 9/42 × 9 = 108/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   10/54 = 10 × 7/54 × 7 = 70/378
4. Subtract the two like fractions:
   108/378 - 70/378 = 108 - 70/378 = 38/378
5. After reducing the fraction, the answer is 19/189

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