Add 28/5 and 4/81, Solve 5 3/5 + 4/81 as a fraction

Add 28/5 and 4/81

1^st number: 5 3/5, 2^nd number: 4/81

28/5 + 4/81 is 2288/405.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 81 is 405

Next, find the equivalent fraction of both fractional numbers with denominator 405
For the 1st fraction, since 5 × 81 = 405,
28/5 = 28 × 81/5 × 81 = 2268/405
Likewise, for the 2nd fraction, since 81 × 5 = 405,
4/81 = 4 × 5/81 × 5 = 20/405
Add the two like fractions:
2268/405 + 20/405 = 2268 + 20/405 = 2288/405
So, 28/5 + 4/81 = 2288/405
In mixed form: 5263/405

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