Answers

Subtract 45/12 from 20/24

1^st number: 20/24, 2^nd number: 3 9/12

20/24 - 45/12 is -35/12.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 24 and 12 is 24
   
   Next, find the equivalent fraction of both fractional numbers with denominator 24
2. For the 1st fraction, since 24 × 1 = 24,
   20/24 = 20 × 1/24 × 1 = 20/24
3. Likewise, for the 2nd fraction, since 12 × 2 = 24,
   45/12 = 45 × 2/12 × 2 = 90/24
4. Subtract the two like fractions:
   20/24 - 90/24 = 20 - 90/24 = -70/24
5. After reducing the fraction, the answer is -35/12

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