Subtract 21/45 from 6/75
6/75 - 21/45 is -29/75.
Steps for subtracting fractions
- 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 - For the 1st fraction, since 75 × 3 = 225,
6/75 = 6 × 3/75 × 3 = 18/225 - Likewise, for the 2nd fraction, since 45 × 5 = 225,
21/45 = 21 × 5/45 × 5 = 105/225 - Subtract the two like fractions:
18/225 - 105/225 = 18 - 105/225 = -87/225 - After reducing the fraction, the answer is -29/75
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