Subtract 20/12 from 5/27, Solve 5/27

Subtract 20/12 from 5/27

1^st number: 5/27, 2^nd number: 1 8/12

5/27 - 20/12 is -40/27.

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,
5/27 = 5 × 4/27 × 4 = 20/108
Likewise, for the 2nd fraction, since 12 × 9 = 108,
20/12 = 20 × 9/12 × 9 = 180/108
Subtract the two like fractions:
20/108 - 180/108 = 20 - 180/108 = -160/108
After reducing the fraction, the answer is -40/27

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