Subtract 27/84 from 54/70
54/70 - 27/84 is 9/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
54/70 = 54 × 6/70 × 6 = 324/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
27/84 = 27 × 5/84 × 5 = 135/420 - Subtract the two like fractions:
324/420 - 135/420 = 324 - 135/420 = 189/420 - After reducing the fraction, the answer is 9/20
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