Write the following as a single fraction in its lowest terms.

$\frac{t}{3}+\frac{t}{5}$

Write the following as a single fraction in its lowest terms.

$\frac{u}{7}+\frac{u}{5}$

Write the following as a single fraction in its lowest terms.

$\frac{z}{7}-\frac{z}{14}$

Write the following as a single fraction in its lowest terms.

$\frac{\left(x+y\right)}{3}+\frac{\left(x+y\right)}{12}$

Write the following as a single fraction in its lowest terms.

$\frac{2x}{3}+\frac{5x}{6}$

Write the following as a single fraction in its lowest terms.

$\frac{3y}{4}+\frac{5y}{8}$

Write the following as a single fraction in its lowest terms.

$\frac{2a}{5}-\frac{3a}{8}$

Write the following as a single fraction in its lowest terms.

$\frac{2a}{7}+\frac{3a}{14}$

Write the following as a single fraction in its lowest terms.

$\frac{x}{9}+\frac{2y}{7}$