Add 5/4 and 28/81, Solve 1 1/4 + 28/81 as a fraction

Add 5/4 and 28/81

1^st number: 1 1/4, 2^nd number: 28/81

5/4 + 28/81 is 517/324.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324

Next, find the equivalent fraction of both fractional numbers with denominator 324
For the 1st fraction, since 4 × 81 = 324,
5/4 = 5 × 81/4 × 81 = 405/324
Likewise, for the 2nd fraction, since 81 × 4 = 324,
28/81 = 28 × 4/81 × 4 = 112/324
Add the two like fractions:
405/324 + 112/324 = 405 + 112/324 = 517/324
So, 5/4 + 28/81 = 517/324
In mixed form: 1193/324

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