Subtract 21/81 from 10/14, Solve 10/14

Subtract 21/81 from 10/14

10/14 - 21/81 is 86/189.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 81 is 1134

Next, find the equivalent fraction of both fractional numbers with denominator 1134
For the 1st fraction, since 14 × 81 = 1134,
10/14 = 10 × 81/14 × 81 = 810/1134
Likewise, for the 2nd fraction, since 81 × 14 = 1134,
21/81 = 21 × 14/81 × 14 = 294/1134
Subtract the two like fractions:
810/1134 - 294/1134 = 810 - 294/1134 = 516/1134
After reducing the fraction, the answer is 86/189

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