Subtract 20/12 from 10/27, Solve 10/27

Subtract 20/12 from 10/27

1^st number: 10/27, 2^nd number: 1 8/12

10/27 - 20/12 is -35/27.

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,
10/27 = 10 × 4/27 × 4 = 40/108
Likewise, for the 2nd fraction, since 12 × 9 = 108,
20/12 = 20 × 9/12 × 9 = 180/108
Subtract the two like fractions:
40/108 - 180/108 = 40 - 180/108 = -140/108
After reducing the fraction, the answer is -35/27

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