Subtract 12/81 from 70/84
70/84 - 12/81 is 37/54.
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,
70/84 = 70 × 27/84 × 27 = 1890/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
12/81 = 12 × 28/81 × 28 = 336/2268 - Subtract the two like fractions:
1890/2268 - 336/2268 = 1890 - 336/2268 = 1554/2268 - After reducing the fraction, the answer is 37/54
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