Answers

Subtract 84/20 from 15/10

1^st number: 1 5/10, 2^nd number: 4 4/20

15/10 - 84/20 is -27/10.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 20 is 20
   
   Next, find the equivalent fraction of both fractional numbers with denominator 20
2. For the 1st fraction, since 10 × 2 = 20,
   15/10 = 15 × 2/10 × 2 = 30/20
3. Likewise, for the 2nd fraction, since 20 × 1 = 20,
   84/20 = 84 × 1/20 × 1 = 84/20
4. Subtract the two like fractions:
   30/20 - 84/20 = 30 - 84/20 = -54/20
5. After reducing the fraction, the answer is -27/10

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