Subtract 8/21 from 40/75, Solve 40/75

Subtract 8/21 from 40/75

40/75 - 8/21 is 16/105.

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

Next, find the equivalent fraction of both fractional numbers with denominator 525
For the 1st fraction, since 75 × 7 = 525,
40/75 = 40 × 7/75 × 7 = 280/525
Likewise, for the 2nd fraction, since 21 × 25 = 525,
8/21 = 8 × 25/21 × 25 = 200/525
Subtract the two like fractions:
280/525 - 200/525 = 280 - 200/525 = 80/525
After reducing the fraction, the answer is 16/105

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