Subtract 3/25 from 9/21, Solve 9/21

Subtract 3/25 from 9/21

9/21 - 3/25 is 54/175.

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,
3/25 = 3 × 21/25 × 21 = 63/525
Subtract the two like fractions:
225/525 - 63/525 = 225 - 63/525 = 162/525
After reducing the fraction, the answer is 54/175

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