Answers

Subtract 49/84 from 1/20

1/20 - 49/84 is -8/15.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 84 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 20 × 21 = 420,
   1/20 = 1 × 21/20 × 21 = 21/420
3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
   49/84 = 49 × 5/84 × 5 = 245/420
4. Subtract the two like fractions:
   21/420 - 245/420 = 21 - 245/420 = -224/420
5. After reducing the fraction, the answer is -8/15

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