Subtract 18/60 from 2/81
2/81 - 18/60 is -223/810.
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,
2/81 = 2 × 20/81 × 20 = 40/1620 - Likewise, for the 2nd fraction, since 60 × 27 = 1620,
18/60 = 18 × 27/60 × 27 = 486/1620 - Subtract the two like fractions:
40/1620 - 486/1620 = 40 - 486/1620 = -446/1620 - After reducing the fraction, the answer is -223/810
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