Subtract 1/75 from 4/21, Solve 4/21

Subtract 1/75 from 4/21

4/21 - 1/75 is 31/175.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 75 is 525

Next, find the equivalent fraction of both fractional numbers with denominator 525
For the 1st fraction, since 21 × 25 = 525,
4/21 = 4 × 25/21 × 25 = 100/525
Likewise, for the 2nd fraction, since 75 × 7 = 525,
1/75 = 1 × 7/75 × 7 = 7/525
Subtract the two like fractions:
100/525 - 7/525 = 100 - 7/525 = 93/525
After reducing the fraction, the answer is 31/175

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