Answers

Subtract 84/28 from 2/21

1^st number: 2/21, 2^nd number: 3 0/28

2/21 - 84/28 is -61/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 28 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 21 × 4 = 84,
   2/21 = 2 × 4/21 × 4 = 8/84
3. Likewise, for the 2nd fraction, since 28 × 3 = 84,
   84/28 = 84 × 3/28 × 3 = 252/84
4. Subtract the two like fractions:
   8/84 - 252/84 = 8 - 252/84 = -244/84
5. After reducing the fraction, the answer is -61/21

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