Subtract 75/25 from 4/21, Solve 4/21

Subtract 75/25 from 4/21

1^st number: 4/21, 2^nd number: 3 0/25

4/21 - 75/25 is -59/21.

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,
4/21 = 4 × 25/21 × 25 = 100/525
Likewise, for the 2nd fraction, since 25 × 21 = 525,
75/25 = 75 × 21/25 × 21 = 1575/525
Subtract the two like fractions:
100/525 - 1575/525 = 100 - 1575/525 = -1475/525
After reducing the fraction, the answer is -59/21

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