Subtract 15/9 from 72/75, Solve 72/75

Subtract 15/9 from 72/75

1^st number: 72/75, 2^nd number: 1 6/9

72/75 - 15/9 is -53/75.

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,
72/75 = 72 × 3/75 × 3 = 216/225
Likewise, for the 2nd fraction, since 9 × 25 = 225,
15/9 = 15 × 25/9 × 25 = 375/225
Subtract the two like fractions:
216/225 - 375/225 = 216 - 375/225 = -159/225
After reducing the fraction, the answer is -53/75

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