Answer:
-9.5
Step-by-step explanation:
We can create an equation to represent this, where [tex]n[/tex] is the missing value.
[tex]2n - 2 = -21[/tex]
Now we can solve for [tex]n[/tex] by isolating it on one side of the equation.
Add 2 to both sides:
[tex]2n - 2 + 2 = -21+2\\\\2n = -19[/tex]
Divide both sides by 2:
[tex]2n\div2 = -19\div2\\\\n = -9.5[/tex]
Hope this helped!
