Subtract 12/9 from 20/75, Solve 20/75

Subtract 12/9 from 20/75

1^st number: 20/75, 2^nd number: 1 3/9

20/75 - 12/9 is -16/15.

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,
20/75 = 20 × 3/75 × 3 = 60/225
Likewise, for the 2nd fraction, since 9 × 25 = 225,
12/9 = 12 × 25/9 × 25 = 300/225
Subtract the two like fractions:
60/225 - 300/225 = 60 - 300/225 = -240/225
After reducing the fraction, the answer is -16/15

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