Answers

Subtract 45/12 from 42/56

1^st number: 42/56, 2^nd number: 3 9/12

42/56 - 45/12 is -3/1.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 12 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 56 × 3 = 168,
   42/56 = 42 × 3/56 × 3 = 126/168
3. Likewise, for the 2nd fraction, since 12 × 14 = 168,
   45/12 = 45 × 14/12 × 14 = 630/168
4. Subtract the two like fractions:
   126/168 - 630/168 = 126 - 630/168 = -504/168
5. After reducing the fraction, the answer is -3/1

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