Answers

Subtract 21/45 from 72/75

72/75 - 21/45 is 37/75.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 45 is 225
   
   Next, find the equivalent fraction of both fractional numbers with denominator 225
2. For the 1st fraction, since 75 × 3 = 225,
   72/75 = 72 × 3/75 × 3 = 216/225
3. Likewise, for the 2nd fraction, since 45 × 5 = 225,
   21/45 = 21 × 5/45 × 5 = 105/225
4. Subtract the two like fractions:
   216/225 - 105/225 = 216 - 105/225 = 111/225
5. After reducing the fraction, the answer is 37/75

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