Answers

Subtract 49/8 from 45/20

1^st number: 2 5/20, 2^nd number: 6 1/8

45/20 - 49/8 is -31/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 8 is 40
   
   Next, find the equivalent fraction of both fractional numbers with denominator 40
2. For the 1st fraction, since 20 × 2 = 40,
   45/20 = 45 × 2/20 × 2 = 90/40
3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
   49/8 = 49 × 5/8 × 5 = 245/40
4. Subtract the two like fractions:
   90/40 - 245/40 = 90 - 245/40 = -155/40
5. After reducing the fraction, the answer is -31/8

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