Subtract 25/81 from 16/18, Solve 16/18

Subtract 25/81 from 16/18

16/18 - 25/81 is 47/81.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 81 is 162

Next, find the equivalent fraction of both fractional numbers with denominator 162
For the 1st fraction, since 18 × 9 = 162,
16/18 = 16 × 9/18 × 9 = 144/162
Likewise, for the 2nd fraction, since 81 × 2 = 162,
25/81 = 25 × 2/81 × 2 = 50/162
Subtract the two like fractions:
144/162 - 50/162 = 144 - 50/162 = 94/162
After reducing the fraction, the answer is 47/81

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