Subtract 21/81 from 98/2, Solve 49 0/2

Subtract 21/81 from 98/2

1^st number: 49 0/2, 2^nd number: 21/81

98/2 - 21/81 is 1316/27.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 81 is 162

Next, find the equivalent fraction of both fractional numbers with denominator 162
For the 1st fraction, since 2 × 81 = 162,
98/2 = 98 × 81/2 × 81 = 7938/162
Likewise, for the 2nd fraction, since 81 × 2 = 162,
21/81 = 21 × 2/81 × 2 = 42/162
Subtract the two like fractions:
7938/162 - 42/162 = 7938 - 42/162 = 7896/162
After reducing the fraction, the answer is 1316/27
In mixed form: 4820/27

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