Answers

Subtract 45/5 from 90/80

1^st number: 1 10/80, 2^nd number: 9 0/5

90/80 - 45/5 is -63/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 5 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   90/80 = 90 × 1/80 × 1 = 90/80
3. Likewise, for the 2nd fraction, since 5 × 16 = 80,
   45/5 = 45 × 16/5 × 16 = 720/80
4. Subtract the two like fractions:
   90/80 - 720/80 = 90 - 720/80 = -630/80
5. After reducing the fraction, the answer is -63/8

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