Subtract 10/84 from 70/81
70/81 - 10/84 is 845/1134.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 84 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 81 × 28 = 2268,
70/81 = 70 × 28/81 × 28 = 1960/2268 - Likewise, for the 2nd fraction, since 84 × 27 = 2268,
10/84 = 10 × 27/84 × 27 = 270/2268 - Subtract the two like fractions:
1960/2268 - 270/2268 = 1960 - 270/2268 = 1690/2268 - After reducing the fraction, the answer is 845/1134
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