The value as in adding them is 19
X=-6
You get all the X to one side, and all the numbers to the other. Then divide. Work is shown in image below.
Answer:
-15/2
Step-by-step explanation:
The next step would be to distribute the negative two through the parenthesis,
-2n-6=9
then you add the six, -2n= 15
then you divide by 15 by negative 2 and get -15/2