Subtract 5/81 from 2/8, Solve 2/8

Subtract 5/81 from 2/8

2/8 - 5/81 is 61/324.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 81 is 648

Next, find the equivalent fraction of both fractional numbers with denominator 648
For the 1st fraction, since 8 × 81 = 648,
2/8 = 2 × 81/8 × 81 = 162/648
Likewise, for the 2nd fraction, since 81 × 8 = 648,
5/81 = 5 × 8/81 × 8 = 40/648
Subtract the two like fractions:
162/648 - 40/648 = 162 - 40/648 = 122/648
After reducing the fraction, the answer is 61/324

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