Answers

Subtract 90/20 from 45/56

1^st number: 45/56, 2^nd number: 4 10/20

45/56 - 90/20 is -207/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 20 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 56 × 5 = 280,
   45/56 = 45 × 5/56 × 5 = 225/280
3. Likewise, for the 2nd fraction, since 20 × 14 = 280,
   90/20 = 90 × 14/20 × 14 = 1260/280
4. Subtract the two like fractions:
   225/280 - 1260/280 = 225 - 1260/280 = -1035/280
5. After reducing the fraction, the answer is -207/56

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