Answer:
The answer is 1 solution.
Explanation:
2(x+3)=12
First, do the multiplication by multiplying two times everything in the parentheses
2x+6=12
Then, subtract six from twelve.
2x+6=12
-6 -6
--------------------
2x=6
Finally, divide everything by two.
x=3
It has one solution, and the solution is x=3!