Subtract 1/84 from 21/54
21/54 - 1/84 is 95/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 84 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 54 × 14 = 756,
21/54 = 21 × 14/54 × 14 = 294/756 - Likewise, for the 2nd fraction, since 84 × 9 = 756,
1/84 = 1 × 9/84 × 9 = 9/756 - Subtract the two like fractions:
294/756 - 9/756 = 294 - 9/756 = 285/756 - After reducing the fraction, the answer is 95/252
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