Subtract 3/27 from 84/42, Solve 2 0/42

Subtract 3/27 from 84/42

1^st number: 2 0/42, 2^nd number: 3/27

84/42 - 3/27 is 17/9.

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,
84/42 = 84 × 9/42 × 9 = 756/378
Likewise, for the 2nd fraction, since 27 × 14 = 378,
3/27 = 3 × 14/27 × 14 = 42/378
Subtract the two like fractions:
756/378 - 42/378 = 756 - 42/378 = 714/378
After reducing the fraction, the answer is 17/9
In mixed form: 18/9

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