Answers

Subtract 56/54 from 12/84

1^st number: 12/84, 2^nd number: 1 2/54

12/84 - 56/54 is -169/189.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 54 is 756
   
   Next, find the equivalent fraction of both fractional numbers with denominator 756
2. For the 1st fraction, since 84 × 9 = 756,
   12/84 = 12 × 9/84 × 9 = 108/756
3. Likewise, for the 2nd fraction, since 54 × 14 = 756,
   56/54 = 56 × 14/54 × 14 = 784/756
4. Subtract the two like fractions:
   108/756 - 784/756 = 108 - 784/756 = -676/756
5. After reducing the fraction, the answer is -169/189

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