Subtract 14/81 from 4/72
4/72 - 14/81 is -19/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 72 × 9 = 648,
4/72 = 4 × 9/72 × 9 = 36/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
14/81 = 14 × 8/81 × 8 = 112/648 - Subtract the two like fractions:
36/648 - 112/648 = 36 - 112/648 = -76/648 - After reducing the fraction, the answer is -19/162
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