Move the x's to one side either by subtracting "3x"from both sides OR by subtracting "5x" to both sides. However, if you use "5x" we will have to deal with "-2x", so lets subtract "3x" from both sides.
Now that we got the x's to one side of the equation, we need to move -7 by adding 7 to both sides of the equation.
Next we need to get "x" by itself by dividing both sides by "2".