Answers

Subtract 90/80 from 5/63

1^st number: 5/63, 2^nd number: 1 10/80

5/63 - 90/80 is -527/504.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 80 is 5040
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5040
2. For the 1st fraction, since 63 × 80 = 5040,
   5/63 = 5 × 80/63 × 80 = 400/5040
3. Likewise, for the 2nd fraction, since 80 × 63 = 5040,
   90/80 = 90 × 63/80 × 63 = 5670/5040
4. Subtract the two like fractions:
   400/5040 - 5670/5040 = 400 - 5670/5040 = -5270/5040
5. After reducing the fraction, the answer is -527/504

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