Answers

Subtract 25/10 from 12/20

1^st number: 12/20, 2^nd number: 2 5/10

12/20 - 25/10 is -19/10.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 10 is 20
   
   Next, find the equivalent fraction of both fractional numbers with denominator 20
2. For the 1st fraction, since 20 × 1 = 20,
   12/20 = 12 × 1/20 × 1 = 12/20
3. Likewise, for the 2nd fraction, since 10 × 2 = 20,
   25/10 = 25 × 2/10 × 2 = 50/20
4. Subtract the two like fractions:
   12/20 - 50/20 = 12 - 50/20 = -38/20
5. After reducing the fraction, the answer is -19/10

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