Answer:
n = -1
Step-by-step explanation:
Isolate the variable, n. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. PEMDAS is the order of operation and stands for: Parenthesis, Exponents (& Roots), Multiplication, Division, Addition, Subtraction.
First, subtract n from both sides of the equation:
3n (-n) = n (-n) - 2
3n - n = -2
2n = -2
Next, isolate the variable n by dividing 2 from both sides of the equation:
(2n)/2 = (-2)/2
n = -2/2
n = -1
n = -1 is your answer.
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