Answers

Subtract 8/45 from 75/21

1^st number: 3 12/21, 2^nd number: 8/45

75/21 - 8/45 is 1069/315.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 45 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 21 × 15 = 315,
   75/21 = 75 × 15/21 × 15 = 1125/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   8/45 = 8 × 7/45 × 7 = 56/315
4. Subtract the two like fractions:
   1125/315 - 56/315 = 1125 - 56/315 = 1069/315
5. In mixed form: 3124/315

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