Answer:
X = 5
Explanation:
To find the solution to a problem like this remember the order of PEMDAS.
According to pemdas parenthesis comes first, do you would solve for this part of the equation by multiplying the outer number by each side inside the parenthesis
Aka 3 × X and 3 × 1
This would make your new equation
3x + 3 = 18
Then, you would try to shorten the equation by removing or adding something to both sides.
In the given equation that would be subtracting 3 by either side, leaving over
3x = 15
Lastly, to find X you would divide 3x and 15
3 ÷ 15 = 5
Therefore X = 5