Answers

Subtract 49/42 from 42/84

1^st number: 42/84, 2^nd number: 1 7/42

42/84 - 49/42 is -2/3.

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,
   42/84 = 42 × 1/84 × 1 = 42/84
3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
   49/42 = 49 × 2/42 × 2 = 98/84
4. Subtract the two like fractions:
   42/84 - 98/84 = 42 - 98/84 = -56/84
5. After reducing the fraction, the answer is -2/3

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