Answers

Subtract 42/21 from 70/42

1^st number: 1 28/42, 2^nd number: 2 0/21

70/42 - 42/21 is -1/3.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 21 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 42 × 1 = 42,
   70/42 = 70 × 1/42 × 1 = 70/42
3. Likewise, for the 2nd fraction, since 21 × 2 = 42,
   42/21 = 42 × 2/21 × 2 = 84/42
4. Subtract the two like fractions:
   70/42 - 84/42 = 70 - 84/42 = -14/42
5. After reducing the fraction, the answer is -1/3

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