91Ó°ÊÓ

In the following exercise, add:$\frac{4}{15}+\frac{7}{15}$

In the following exercise, add:$\frac{x}{4}+\frac{3}{4}$

In the following exercise, add:$\frac{8}{q}+\frac{6}{q}$

In the following exercise, add:$-\frac{3}{16}+(-\frac{7}{16})$

In the following exercises, use the divisibility tests to determine whether each number is divisible by $2,3,5,6,and10.$
$986$

In the following exercise, add:$-\frac{5}{16}+(-\frac{9}{16})$

In the following exercise, add:$-\frac{8}{17}+\frac{15}{17}$

In the following exercise, add:$-\frac{9}{19}+\frac{17}{19}$

In the following exercise, add:$\frac{6}{13}+(-\frac{10}{13})+(-\frac{12}{13})$

In the following exercise, add:$\frac{5}{12}+(-\frac{7}{12})+(-\frac{11}{12})$