Subtract 27/84 from 15/20
15/20 - 27/84 is 3/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
15/20 = 15 × 21/20 × 21 = 315/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
27/84 = 27 × 5/84 × 5 = 135/420 - Subtract the two like fractions:
315/420 - 135/420 = 315 - 135/420 = 180/420 - After reducing the fraction, the answer is 3/7
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