Answer:
n = -20
Step-by-step explanation:
n - 8 = 2n+12 (equation)
+8 +8
n = 2n +20
-2n -2n
-n = 20
/-1 /-1
n = -20
A variable is a letter in the equation.
A, B, and C dont have variables... unless a question mark is considered a variable at your school (I dont consider it a variable).
D has an x in the equation, so D has a variable.
7 is the correct answer to this question/equation
Width × Length × Height. That Should Help a Bit
