Write two numbers that have an absolute value of $4$.

Substitute the values for $a=7$ and $b=-4$ to find the value of given expression.

$\left|a+2b\right|$

Substitute the values for $a=7$ and $b=-4$ to find the value of given expression.

$\left|a-2b\right|$

Substitute the values for $a=7$ and $b=-4$ to find the value of given expression.

$\left|-2a+b\right|$

Substitute the values for $a=7$ and $b=-4$ to find the value of given expression.

$\left|-2a-b\right|$

Substitute the values for $a=7$ and $b=-4$ to find the value of given expression.

$\left|3b-3a\right|$

Substitute the value of $b=-4$ . find the value of given expression.

$\left|b^3\right|$

Substitute the values for $a=-5$ and $b=3$ to find the value of given expression.

$a+\left|a+b\right|$