Answers

Subtract 70/20 from 2/84

1^st number: 2/84, 2^nd number: 3 10/20

2/84 - 70/20 is -73/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 20 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   2/84 = 2 × 5/84 × 5 = 10/420
3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
   70/20 = 70 × 21/20 × 21 = 1470/420
4. Subtract the two like fractions:
   10/420 - 1470/420 = 10 - 1470/420 = -1460/420
5. After reducing the fraction, the answer is -73/21

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