Answers

Subtract 8/21 from 12/5

1^st number: 2 2/5, 2^nd number: 8/21

12/5 - 8/21 is 212/105.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 21 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 5 × 21 = 105,
   12/5 = 12 × 21/5 × 21 = 252/105
3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
   8/21 = 8 × 5/21 × 5 = 40/105
4. Subtract the two like fractions:
   252/105 - 40/105 = 252 - 40/105 = 212/105
5. In mixed form: 22/105

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