Subtract 80/56 from 30/27, Solve 1 3/27

Subtract 80/56 from 30/27

1^st number: 1 3/27, 2^nd number: 1 24/56

30/27 - 80/56 is -20/63.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 56 is 1512

Next, find the equivalent fraction of both fractional numbers with denominator 1512
For the 1st fraction, since 27 × 56 = 1512,
30/27 = 30 × 56/27 × 56 = 1680/1512
Likewise, for the 2nd fraction, since 56 × 27 = 1512,
80/56 = 80 × 27/56 × 27 = 2160/1512
Subtract the two like fractions:
1680/1512 - 2160/1512 = 1680 - 2160/1512 = -480/1512
After reducing the fraction, the answer is -20/63

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