Subtract 18/27 from 21/75
21/75 - 18/27 is -29/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 27 is 675
Next, find the equivalent fraction of both fractional numbers with denominator 675 - For the 1st fraction, since 75 × 9 = 675,
21/75 = 21 × 9/75 × 9 = 189/675 - Likewise, for the 2nd fraction, since 27 × 25 = 675,
18/27 = 18 × 25/27 × 25 = 450/675 - Subtract the two like fractions:
189/675 - 450/675 = 189 - 450/675 = -261/675 - After reducing the fraction, the answer is -29/75
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