Answers

Subtract 84/7 from 2/21

1^st number: 2/21, 2^nd number: 12 0/7

2/21 - 84/7 is -250/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 7 is 21
   
   Next, find the equivalent fraction of both fractional numbers with denominator 21
2. For the 1st fraction, since 21 × 1 = 21,
   2/21 = 2 × 1/21 × 1 = 2/21
3. Likewise, for the 2nd fraction, since 7 × 3 = 21,
   84/7 = 84 × 3/7 × 3 = 252/21
4. Subtract the two like fractions:
   2/21 - 252/21 = 2 - 252/21 = -250/21

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