Answer:
x - 7
Explanation:
The question asks us to simplify the following expression:
.
In order to simplify the given expression, we can start by multiplying the minus sign through the terms of the last brackets:
⇒
Next, we have to remove the parentheses from the rest of the terms:
⇒
Next, we have to collect the like terms by separating terms with an x from those that don't have an x:
⇒
Now we can simply evaluate the terms with an x, followed by those without an x:
⇒
⇒
Therefore, simplifying the expression given in the question, we get x - 7.