Answers

Subtract 40/21 from 84/25

1^st number: 3 9/25, 2^nd number: 1 19/21

84/25 - 40/21 is 764/525.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 21 is 525
   
   Next, find the equivalent fraction of both fractional numbers with denominator 525
2. For the 1st fraction, since 25 × 21 = 525,
   84/25 = 84 × 21/25 × 21 = 1764/525
3. Likewise, for the 2nd fraction, since 21 × 25 = 525,
   40/21 = 40 × 25/21 × 25 = 1000/525
4. Subtract the two like fractions:
   1764/525 - 1000/525 = 1764 - 1000/525 = 764/525
5. In mixed form: 1239/525

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