Answers

Subtract 40/14 from 15/12

1^st number: 1 3/12, 2^nd number: 2 12/14

15/12 - 40/14 is -45/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 14 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   15/12 = 15 × 7/12 × 7 = 105/84
3. Likewise, for the 2nd fraction, since 14 × 6 = 84,
   40/14 = 40 × 6/14 × 6 = 240/84
4. Subtract the two like fractions:
   105/84 - 240/84 = 105 - 240/84 = -135/84
5. After reducing the fraction, the answer is -45/28

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