Answers

Subtract 54/21 from 18/56

1^st number: 18/56, 2^nd number: 2 12/21

18/56 - 54/21 is -9/4.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 21 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 56 × 3 = 168,
   18/56 = 18 × 3/56 × 3 = 54/168
3. Likewise, for the 2nd fraction, since 21 × 8 = 168,
   54/21 = 54 × 8/21 × 8 = 432/168
4. Subtract the two like fractions:
   54/168 - 432/168 = 54 - 432/168 = -378/168
5. After reducing the fraction, the answer is -9/4

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