Answers

Subtract 20/30 from 5/84

5/84 - 20/30 is -17/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 30 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   5/84 = 5 × 5/84 × 5 = 25/420
3. Likewise, for the 2nd fraction, since 30 × 14 = 420,
   20/30 = 20 × 14/30 × 14 = 280/420
4. Subtract the two like fractions:
   25/420 - 280/420 = 25 - 280/420 = -255/420
5. After reducing the fraction, the answer is -17/28

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