Add the numerators then add the common denominator

Add the numerators then copy the common denominator

Add the common denominator then copy the numerators

None of the above

Add the numerators then add the denominators

Add the numerators then copy the denominators

Add the denominators then copy the numerators

Change the fractions to dissimilar fractions first then follow the process of adding similar fractions.

Add the whole numbers then add the similar fractions

Add the whole numbers and numerators then copy the common denominator

Copy the whole numbers then add the similar fractions

Copy the similar fractions then add the whole numbers.

$\frac{1}{9}+\frac{5}{9}+\frac{2}{9}=n$

$\frac{2}{5}+\frac{2}{6}+\frac{2}{9}=n$

$\frac{8}{12}+\frac{7}{9}+\frac{8}{10}=n$

$\frac{1}{9}+\frac{5}{9}+\frac{2}{9}=n$

$\frac{2}{5}+\frac{2}{6}+\frac{2}{9}=n$

 $\frac{8}{10}+\frac{7}{10}+\frac{8}{10}=n$