Add 81/2 and 15/27, Solve 40 1/2 + 15/27 as a fraction

Add 81/2 and 15/27

1^st number: 40 1/2, 2^nd number: 15/27

81/2 + 15/27 is 739/18.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 27 is 54

Next, find the equivalent fraction of both fractional numbers with denominator 54
For the 1st fraction, since 2 × 27 = 54,
81/2 = 81 × 27/2 × 27 = 2187/54
Likewise, for the 2nd fraction, since 27 × 2 = 54,
15/27 = 15 × 2/27 × 2 = 30/54
Add the two like fractions:
2187/54 + 30/54 = 2187 + 30/54 = 2217/54
2217/54 simplified gives 739/18
So, 81/2 + 15/27 = 739/18
In mixed form: 411/18

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