Answer:
The solution to this equation is x=4 (or A)
Explanation:
First, you want to remove the parentheses from the equation and distribute 2 through the parentheses:
4x+2x+12=36
Then you collect like terms:
6x+12=36
Then you move the constant to the right-hand side and change its sign:
6x=36-12
Then you subtract the numbers:
6x=24
Then you divide both sides of the equation by 6, which gives you your solution:
x=4