Subtract 1/84 from 27/12, Solve 2 3/12

Subtract 1/84 from 27/12

1^st number: 2 3/12, 2^nd number: 1/84

27/12 - 1/84 is 47/21.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
27/12 = 27 × 7/12 × 7 = 189/84
Likewise, for the 2nd fraction, since 84 × 1 = 84,
1/84 = 1 × 1/84 × 1 = 1/84
Subtract the two like fractions:
189/84 - 1/84 = 189 - 1/84 = 188/84
After reducing the fraction, the answer is 47/21
In mixed form: 25/21

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