Answers

Subtract 90/24 from 42/63

1^st number: 42/63, 2^nd number: 3 18/24

42/63 - 90/24 is -37/12.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 24 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 63 × 8 = 504,
   42/63 = 42 × 8/63 × 8 = 336/504
3. Likewise, for the 2nd fraction, since 24 × 21 = 504,
   90/24 = 90 × 21/24 × 21 = 1890/504
4. Subtract the two like fractions:
   336/504 - 1890/504 = 336 - 1890/504 = -1554/504
5. After reducing the fraction, the answer is -37/12

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