Answers

Subtract 90/80 from 4/5

1^st number: 4/5, 2^nd number: 1 10/80

4/5 - 90/80 is -13/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 5 × 16 = 80,
   4/5 = 4 × 16/5 × 16 = 64/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   90/80 = 90 × 1/80 × 1 = 90/80
4. Subtract the two like fractions:
   64/80 - 90/80 = 64 - 90/80 = -26/80
5. After reducing the fraction, the answer is -13/40

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