Subtract 21/25 from 9/21
9/21 - 21/25 is -72/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
9/21 = 9 × 25/21 × 25 = 225/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
21/25 = 21 × 21/25 × 21 = 441/525 - Subtract the two like fractions:
225/525 - 441/525 = 225 - 441/525 = -216/525 - After reducing the fraction, the answer is -72/175
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