Answer:
Step-by-step explanation:
Recognize that the (1/2) in 4n=1/2(2n-12) is a coefficient, the coefficient of the (2n - 12) term.
Thus, multiply both sides of this equation 4n=1/2(2n-12) by 2, to obtain:
8n = 2n - 12
Combining like terms, we get 6n = -12, so that n = -2.
Multiplying both sides of the equation by a constant does not in any way affect your ability to find a solution and does not change the solution.