Subtract 10/75 from 21/45
21/45 - 10/75 is 1/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 75 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 45 × 5 = 225,
21/45 = 21 × 5/45 × 5 = 105/225 - Likewise, for the 2nd fraction, since 75 × 3 = 225,
10/75 = 10 × 3/75 × 3 = 30/225 - Subtract the two like fractions:
105/225 - 30/225 = 105 - 30/225 = 75/225 - After reducing the fraction, the answer is 1/3
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