Subtract 8/27 from 80/42, Solve 1 38/42

Subtract 8/27 from 80/42

1^st number: 1 38/42, 2^nd number: 8/27

80/42 - 8/27 is 304/189.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 42 × 9 = 378,
80/42 = 80 × 9/42 × 9 = 720/378
Likewise, for the 2nd fraction, since 27 × 14 = 378,
8/27 = 8 × 14/27 × 14 = 112/378
Subtract the two like fractions:
720/378 - 112/378 = 720 - 112/378 = 608/378
After reducing the fraction, the answer is 304/189
In mixed form: 1115/189

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