Answers

Subtract 8/20 from 25/84

25/84 - 8/20 is -43/420.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 20 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   25/84 = 25 × 5/84 × 5 = 125/420
3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
   8/20 = 8 × 21/20 × 21 = 168/420
4. Subtract the two like fractions:
   125/420 - 168/420 = 125 - 168/420 = -43/420

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