Answers

Subtract 15/28 from 12/42

12/42 - 15/28 is -1/4.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 28 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 42 × 2 = 84,
   12/42 = 12 × 2/42 × 2 = 24/84
3. Likewise, for the 2nd fraction, since 28 × 3 = 84,
   15/28 = 15 × 3/28 × 3 = 45/84
4. Subtract the two like fractions:
   24/84 - 45/84 = 24 - 45/84 = -21/84
5. After reducing the fraction, the answer is -1/4

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