We can rewrite this problem numerically:
12 - 3(-2x + 4)
First, we distribute -3 into the numbers within the parenthesis:
(-3) • (-2x) = 6x
-3 • 4 = -12
Next, we can rewrite:
12 + 6x - 12
Then, we can combine like terms:
12 - 12 = 0
Therefore, this expression simplifies to 6x.