Subtract 4/81 from 20/24
20/24 - 4/81 is 127/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 24 × 27 = 648,
20/24 = 20 × 27/24 × 27 = 540/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
4/81 = 4 × 8/81 × 8 = 32/648 - Subtract the two like fractions:
540/648 - 32/648 = 540 - 32/648 = 508/648 - After reducing the fraction, the answer is 127/162
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