Subtract 28/12 from 15/27, Solve 15/27

Subtract 28/12 from 15/27

1^st number: 15/27, 2^nd number: 2 4/12

15/27 - 28/12 is -16/9.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 12 is 108

Next, find the equivalent fraction of both fractional numbers with denominator 108
For the 1st fraction, since 27 × 4 = 108,
15/27 = 15 × 4/27 × 4 = 60/108
Likewise, for the 2nd fraction, since 12 × 9 = 108,
28/12 = 28 × 9/12 × 9 = 252/108
Subtract the two like fractions:
60/108 - 252/108 = 60 - 252/108 = -192/108
After reducing the fraction, the answer is -16/9

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