Answers

Subtract 32/45 from 21/12

1^st number: 1 9/12, 2^nd number: 32/45

21/12 - 32/45 is 187/180.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 45 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 12 × 15 = 180,
   21/12 = 21 × 15/12 × 15 = 315/180
3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
   32/45 = 32 × 4/45 × 4 = 128/180
4. Subtract the two like fractions:
   315/180 - 128/180 = 315 - 128/180 = 187/180
5. In mixed form: 17/180

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