Subtract 54/60 from 1/81
1/81 - 54/60 is -719/810.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 60 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
1/81 = 1 × 20/81 × 20 = 20/1620 - Likewise, for the 2nd fraction, since 60 × 27 = 1620,
54/60 = 54 × 27/60 × 27 = 1458/1620 - Subtract the two like fractions:
20/1620 - 1458/1620 = 20 - 1458/1620 = -1438/1620 - After reducing the fraction, the answer is -719/810
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