Answers

Subtract 12/42 from 9/4

1^st number: 2 1/4, 2^nd number: 12/42

9/4 - 12/42 is 55/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 42 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 4 × 21 = 84,
   9/4 = 9 × 21/4 × 21 = 189/84
3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
   12/42 = 12 × 2/42 × 2 = 24/84
4. Subtract the two like fractions:
   189/84 - 24/84 = 189 - 24/84 = 165/84
5. After reducing the fraction, the answer is 55/28
6. In mixed form: 127/28

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