Subtract 30/9 from 27/84, Solve 27/84

Subtract 30/9 from 27/84

1^st number: 27/84, 2^nd number: 3 3/9

27/84 - 30/9 is -253/84.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 9 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 84 × 3 = 252,
27/84 = 27 × 3/84 × 3 = 81/252
Likewise, for the 2nd fraction, since 9 × 28 = 252,
30/9 = 30 × 28/9 × 28 = 840/252
Subtract the two like fractions:
81/252 - 840/252 = 81 - 840/252 = -759/252
After reducing the fraction, the answer is -253/84

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