Answers

Subtract 10/5 from 21/45

1^st number: 21/45, 2^nd number: 2 0/5

21/45 - 10/5 is -23/15.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 5 is 45
   
   Next, find the equivalent fraction of both fractional numbers with denominator 45
2. For the 1st fraction, since 45 × 1 = 45,
   21/45 = 21 × 1/45 × 1 = 21/45
3. Likewise, for the 2nd fraction, since 5 × 9 = 45,
   10/5 = 10 × 9/5 × 9 = 90/45
4. Subtract the two like fractions:
   21/45 - 90/45 = 21 - 90/45 = -69/45
5. After reducing the fraction, the answer is -23/15

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