Subtract 63/9 from 12/75, Solve 12/75

Subtract 63/9 from 12/75

1^st number: 12/75, 2^nd number: 7 0/9

12/75 - 63/9 is -171/25.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 9 is 225

Next, find the equivalent fraction of both fractional numbers with denominator 225
For the 1st fraction, since 75 × 3 = 225,
12/75 = 12 × 3/75 × 3 = 36/225
Likewise, for the 2nd fraction, since 9 × 25 = 225,
63/9 = 63 × 25/9 × 25 = 1575/225
Subtract the two like fractions:
36/225 - 1575/225 = 36 - 1575/225 = -1539/225
After reducing the fraction, the answer is -171/25

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