Answers

Subtract 90/63 from 18/24

1^st number: 18/24, 2^nd number: 1 27/63

18/24 - 90/63 is -19/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 24 and 63 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 24 × 21 = 504,
   18/24 = 18 × 21/24 × 21 = 378/504
3. Likewise, for the 2nd fraction, since 63 × 8 = 504,
   90/63 = 90 × 8/63 × 8 = 720/504
4. Subtract the two like fractions:
   378/504 - 720/504 = 378 - 720/504 = -342/504
5. After reducing the fraction, the answer is -19/28

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