Express the following rational number to the lowest form:

$\frac{4}{22}$

Express the following rational number to the lowest form:

$\frac{-36}{180}$

Express the following rational number to the lowest form:

$\frac{132}{-428}$

Express the following rational number to the lowest form:

$\frac{-32}{-56}$

Write the following rational number in the standard form:

$\frac{2}{10}$

Write the following rational number in the standard form:

$\frac{-8}{36}$

Write the following rational number in the standard form:

$\frac{4}{-16}$

Write the following rational number in the standard form:

$\frac{-15}{-35}$

Write the following rational number in the standard form:

$\frac{299}{-161}$