Subtract 10/81 from 90/84
1st number: 1 6/84, 2nd number: 10/81
90/84 - 10/81 is 1075/1134.
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,
90/84 = 90 × 27/84 × 27 = 2430/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
10/81 = 10 × 28/81 × 28 = 280/2268 - Subtract the two like fractions:
2430/2268 - 280/2268 = 2430 - 280/2268 = 2150/2268 - After reducing the fraction, the answer is 1075/1134
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