Answers

Subtract 27/36 from 75/21

1^st number: 3 12/21, 2^nd number: 27/36

75/21 - 27/36 is 79/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 36 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 21 × 12 = 252,
   75/21 = 75 × 12/21 × 12 = 900/252
3. Likewise, for the 2nd fraction, since 36 × 7 = 252,
   27/36 = 27 × 7/36 × 7 = 189/252
4. Subtract the two like fractions:
   900/252 - 189/252 = 900 - 189/252 = 711/252
5. After reducing the fraction, the answer is 79/28
6. In mixed form: 223/28

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