Answers

Subtract 45/21 from 12/75

1^st number: 12/75, 2^nd number: 2 3/21

12/75 - 45/21 is -347/175.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 21 is 525
   
   Next, find the equivalent fraction of both fractional numbers with denominator 525
2. For the 1st fraction, since 75 × 7 = 525,
   12/75 = 12 × 7/75 × 7 = 84/525
3. Likewise, for the 2nd fraction, since 21 × 25 = 525,
   45/21 = 45 × 25/21 × 25 = 1125/525
4. Subtract the two like fractions:
   84/525 - 1125/525 = 84 - 1125/525 = -1041/525
5. After reducing the fraction, the answer is -347/175

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