Subtract 12/30 from 27/84
27/84 - 12/30 is -11/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
27/84 = 27 × 5/84 × 5 = 135/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
12/30 = 12 × 14/30 × 14 = 168/420 - Subtract the two like fractions:
135/420 - 168/420 = 135 - 168/420 = -33/420 - After reducing the fraction, the answer is -11/140
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