Answers

Subtract 9/63 from 18/75

18/75 - 9/63 is 17/175.

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,
   18/75 = 18 × 21/75 × 21 = 378/1575
3. Likewise, for the 2nd fraction, since 63 × 25 = 1575,
   9/63 = 9 × 25/63 × 25 = 225/1575
4. Subtract the two like fractions:
   378/1575 - 225/1575 = 378 - 225/1575 = 153/1575
5. After reducing the fraction, the answer is 17/175

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