Answers

Subtract 21/12 from 32/21

1^st number: 1 11/21, 2^nd number: 1 9/12

32/21 - 21/12 is -19/84.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 12 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 21 × 4 = 84,
   32/21 = 32 × 4/21 × 4 = 128/84
3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
   21/12 = 21 × 7/12 × 7 = 147/84
4. Subtract the two like fractions:
   128/84 - 147/84 = 128 - 147/84 = -19/84

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