Answer: x=25
Explanation:
You need to put all common factors on one side of the equation (one side of the equal sign) to solve for x.
In order to move the seven over to the other side of the equation you need to add or subtract it from 18. (subtract if is a positive number, add if it is a negative number).
In this case you add, so 7+18 is 25
It is a one step equation so you now have your answer.
x=25