Subtract 50/18 from 4/81, Solve 4/81

Subtract 50/18 from 4/81

1^st number: 4/81, 2^nd number: 2 14/18

4/81 - 50/18 is -221/81.

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,
4/81 = 4 × 2/81 × 2 = 8/162
Likewise, for the 2nd fraction, since 18 × 9 = 162,
50/18 = 50 × 9/18 × 9 = 450/162
Subtract the two like fractions:
8/162 - 450/162 = 8 - 450/162 = -442/162
After reducing the fraction, the answer is -221/81

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