Subtract 80/12 from 21/25, Solve 21/25

Subtract 80/12 from 21/25

1^st number: 21/25, 2^nd number: 6 8/12

21/25 - 80/12 is -437/75.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 12 is 300

Next, find the equivalent fraction of both fractional numbers with denominator 300
For the 1st fraction, since 25 × 12 = 300,
21/25 = 21 × 12/25 × 12 = 252/300
Likewise, for the 2nd fraction, since 12 × 25 = 300,
80/12 = 80 × 25/12 × 25 = 2000/300
Subtract the two like fractions:
252/300 - 2000/300 = 252 - 2000/300 = -1748/300
After reducing the fraction, the answer is -437/75

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