Add 21/2 and 18/81, Solve 10 1/2 + 18/81 as a fraction

Add 21/2 and 18/81

1^st number: 10 1/2, 2^nd number: 18/81

21/2 + 18/81 is 193/18.

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,
21/2 = 21 × 81/2 × 81 = 1701/162
Likewise, for the 2nd fraction, since 81 × 2 = 162,
18/81 = 18 × 2/81 × 2 = 36/162
Add the two like fractions:
1701/162 + 36/162 = 1701 + 36/162 = 1737/162
1737/162 simplified gives 193/18
So, 21/2 + 18/81 = 193/18
In mixed form: 1013/18

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