Subtract 28/21 from 28/25, Solve 1 3/25

Subtract 28/21 from 28/25

1^st number: 1 3/25, 2^nd number: 1 7/21

28/25 - 28/21 is -16/75.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 21 is 525

Next, find the equivalent fraction of both fractional numbers with denominator 525
For the 1st fraction, since 25 × 21 = 525,
28/25 = 28 × 21/25 × 21 = 588/525
Likewise, for the 2nd fraction, since 21 × 25 = 525,
28/21 = 28 × 25/21 × 25 = 700/525
Subtract the two like fractions:
588/525 - 700/525 = 588 - 700/525 = -112/525
After reducing the fraction, the answer is -16/75

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