Answers

Subtract 96/12 from 21/42

1^st number: 21/42, 2^nd number: 8 0/12

21/42 - 96/12 is -15/2.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 12 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 42 × 2 = 84,
   21/42 = 21 × 2/42 × 2 = 42/84
3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
   96/12 = 96 × 7/12 × 7 = 672/84
4. Subtract the two like fractions:
   42/84 - 672/84 = 42 - 672/84 = -630/84
5. After reducing the fraction, the answer is -15/2

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