Answers

Subtract 21/10 from 10/25

1^st number: 10/25, 2^nd number: 2 1/10

10/25 - 21/10 is -17/10.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 10 is 50
   
   Next, find the equivalent fraction of both fractional numbers with denominator 50
2. For the 1st fraction, since 25 × 2 = 50,
   10/25 = 10 × 2/25 × 2 = 20/50
3. Likewise, for the 2nd fraction, since 10 × 5 = 50,
   21/10 = 21 × 5/10 × 5 = 105/50
4. Subtract the two like fractions:
   20/50 - 105/50 = 20 - 105/50 = -85/50
5. After reducing the fraction, the answer is -17/10

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