Answers

Subtract 90/63 from 16/75

1^st number: 16/75, 2^nd number: 1 27/63

16/75 - 90/63 is -638/525.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 63 is 1575
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1575
2. For the 1st fraction, since 75 × 21 = 1575,
   16/75 = 16 × 21/75 × 21 = 336/1575
3. Likewise, for the 2nd fraction, since 63 × 25 = 1575,
   90/63 = 90 × 25/63 × 25 = 2250/1575
4. Subtract the two like fractions:
   336/1575 - 2250/1575 = 336 - 2250/1575 = -1914/1575
5. After reducing the fraction, the answer is -638/525

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