Answer:

Explanation:

Given that:

To evaluate the expression, we must simply substitute the given value of
, which is
, for
:

Multiply:

Subtract:

-
To check your work, simply set the given expression equal to our solution,
:

Add
to both sides of the equation:

Divide both sides of the equation by the coefficient of
, which is
:

Since it matches the given value of
, our solution is correct!