Answers

Subtract 2/42 from 2/84

2/84 - 2/42 is -1/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 42 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 84 × 1 = 84,
   2/84 = 2 × 1/84 × 1 = 2/84
3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
   2/42 = 2 × 2/42 × 2 = 4/84
4. Subtract the two like fractions:
   2/84 - 4/84 = 2 - 4/84 = -2/84
5. After reducing the fraction, the answer is -1/42

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