Answers

Subtract 18/84 from 5/63

5/63 - 18/84 is -17/126.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 84 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 63 × 4 = 252,
   5/63 = 5 × 4/63 × 4 = 20/252
3. Likewise, for the 2nd fraction, since 84 × 3 = 252,
   18/84 = 18 × 3/84 × 3 = 54/252
4. Subtract the two like fractions:
   20/252 - 54/252 = 20 - 54/252 = -34/252
5. After reducing the fraction, the answer is -17/126

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