Answers

Subtract 21/9 from 42/75

1^st number: 42/75, 2^nd number: 2 3/9

42/75 - 21/9 is -133/75.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 9 is 225
   
   Next, find the equivalent fraction of both fractional numbers with denominator 225
2. For the 1st fraction, since 75 × 3 = 225,
   42/75 = 42 × 3/75 × 3 = 126/225
3. Likewise, for the 2nd fraction, since 9 × 25 = 225,
   21/9 = 21 × 25/9 × 25 = 525/225
4. Subtract the two like fractions:
   126/225 - 525/225 = 126 - 525/225 = -399/225
5. After reducing the fraction, the answer is -133/75

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