Add 42/15 and 10/81, Solve 2 12/15 + 10/81 as a fraction

Add 42/15 and 10/81

1^st number: 2 12/15, 2^nd number: 10/81

42/15 + 10/81 is 1184/405.

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,
42/15 = 42 × 27/15 × 27 = 1134/405
Likewise, for the 2nd fraction, since 81 × 5 = 405,
10/81 = 10 × 5/81 × 5 = 50/405
Add the two like fractions:
1134/405 + 50/405 = 1134 + 50/405 = 1184/405
So, 42/15 + 10/81 = 1184/405
In mixed form: 2374/405

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