Subtract 27/28 from 21/75
21/75 - 27/28 is -479/700.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 28 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 75 × 28 = 2100,
21/75 = 21 × 28/75 × 28 = 588/2100 - Likewise, for the 2nd fraction, since 28 × 75 = 2100,
27/28 = 27 × 75/28 × 75 = 2025/2100 - Subtract the two like fractions:
588/2100 - 2025/2100 = 588 - 2025/2100 = -1437/2100 - After reducing the fraction, the answer is -479/700
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