Subtract 90/81 from 14/84
1st number: 14/84, 2nd number: 1 9/81
14/84 - 90/81 is -17/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 84 × 27 = 2268,
14/84 = 14 × 27/84 × 27 = 378/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
90/81 = 90 × 28/81 × 28 = 2520/2268 - Subtract the two like fractions:
378/2268 - 2520/2268 = 378 - 2520/2268 = -2142/2268 - After reducing the fraction, the answer is -17/18
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