Subtract 21/75 from 3/45
3/45 - 21/75 is -16/75.
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,
3/45 = 3 × 5/45 × 5 = 15/225 - Likewise, for the 2nd fraction, since 75 × 3 = 225,
21/75 = 21 × 3/75 × 3 = 63/225 - Subtract the two like fractions:
15/225 - 63/225 = 15 - 63/225 = -48/225 - After reducing the fraction, the answer is -16/75
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