Add 28/15 and 3/81, Solve 1 13/15 + 3/81 as a fraction

Add 28/15 and 3/81

1^st number: 1 13/15, 2^nd number: 3/81

28/15 + 3/81 is 257/135.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 81 is 405

Next, find the equivalent fraction of both fractional numbers with denominator 405
For the 1st fraction, since 15 × 27 = 405,
28/15 = 28 × 27/15 × 27 = 756/405
Likewise, for the 2nd fraction, since 81 × 5 = 405,
3/81 = 3 × 5/81 × 5 = 15/405
Add the two like fractions:
756/405 + 15/405 = 756 + 15/405 = 771/405
771/405 simplified gives 257/135
So, 28/15 + 3/81 = 257/135
In mixed form: 1122/135

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