Subtract 2/60 from 18/81
18/81 - 2/60 is 17/90.
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,
18/81 = 18 × 20/81 × 20 = 360/1620 - Likewise, for the 2nd fraction, since 60 × 27 = 1620,
2/60 = 2 × 27/60 × 27 = 54/1620 - Subtract the two like fractions:
360/1620 - 54/1620 = 360 - 54/1620 = 306/1620 - After reducing the fraction, the answer is 17/90
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