
Katherine P. answered 07/23/13
Positive, Effective, and Experienced Math Tutor
With an algebraic equation like this, it's helpful to isolate the terms with variables (in this case n/4) on the left side of the equation and the constant terms (numbers) on the right side.
-9 + n/4 = -7
Add 9 to both sides:
-9 + 9 + n/4 = -7 + 9
n/4 = 2
Now isolate the variable n by multiplying both sides by 4:
4(n/4) = 2 * 4
n = 8
Hope that helps!