Subtract 3/18 from 40/81
40/81 - 3/18 is 53/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 18 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 81 × 2 = 162,
40/81 = 40 × 2/81 × 2 = 80/162 - Likewise, for the 2nd fraction, since 18 × 9 = 162,
3/18 = 3 × 9/18 × 9 = 27/162 - Subtract the two like fractions:
80/162 - 27/162 = 80 - 27/162 = 53/162
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