3 12/17 + 2 6/17 =

Add the whole numbers and the fractions separately:

Whole numbers: \( 3 + 2 = 5 \)

Fractions: \( \frac{12}{17} + \frac{6}{17} = \frac{12 + 6}{17} = \frac{18}{17} \)

Combine the whole number and the fraction:

\( 5 + \frac{18}{17} \)

Convert the improper fraction \( \frac{18}{17} \) to a mixed number:

\( \frac{18}{17} = 1 \frac{1}{17} \)

Add this to the whole number sum:

\( 5 + 1 \frac{1}{17} = 6 \frac{1}{17} \)

Ответ: 6 1/17