Answers

Subtract 30/10 from 25/20

1^st number: 1 5/20, 2^nd number: 3 0/10

25/20 - 30/10 is -7/4.

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,
   25/20 = 25 × 1/20 × 1 = 25/20
3. Likewise, for the 2nd fraction, since 10 × 2 = 20,
   30/10 = 30 × 2/10 × 2 = 60/20
4. Subtract the two like fractions:
   25/20 - 60/20 = 25 - 60/20 = -35/20
5. After reducing the fraction, the answer is -7/4

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