Subtract 42/84 from 1/27
1/27 - 42/84 is -25/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 84 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 27 × 28 = 756,
1/27 = 1 × 28/27 × 28 = 28/756 - Likewise, for the 2nd fraction, since 84 × 9 = 756,
42/84 = 42 × 9/84 × 9 = 378/756 - Subtract the two like fractions:
28/756 - 378/756 = 28 - 378/756 = -350/756 - After reducing the fraction, the answer is -25/54
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