Add n and n.
Add 2n and n.
Add 3n and n.
Simplify by subtracting numbers.
Subtract 4 from -2.
Subtract 6 from -6.
Move all terms not containing n to the right side of the equation.
Add 12 to both sides of the equation.
Add -72 and 12.
Divide each term by 4 and simplify.
Divide each term in 4n=-60 by 4.
Cancel the common factor of 4.
Cancel the common factor.
Divide n by 1.
Divide -60 by 4.
Solve for n n+(n-2)+(n-4)+(n-6)=-72