Answers

Subtract 14/12 from 20/42

1^st number: 20/42, 2^nd number: 1 2/12

20/42 - 14/12 is -29/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 12 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 42 × 2 = 84,
   20/42 = 20 × 2/42 × 2 = 40/84
3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
   14/12 = 14 × 7/12 × 7 = 98/84
4. Subtract the two like fractions:
   40/84 - 98/84 = 40 - 98/84 = -58/84
5. After reducing the fraction, the answer is -29/42

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