Answers

Subtract 8/63 from 1/20

1/20 - 8/63 is -97/1260.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 63 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 20 × 63 = 1260,
   1/20 = 1 × 63/20 × 63 = 63/1260
3. Likewise, for the 2nd fraction, since 63 × 20 = 1260,
   8/63 = 8 × 20/63 × 20 = 160/1260
4. Subtract the two like fractions:
   63/1260 - 160/1260 = 63 - 160/1260 = -97/1260

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