Respuesta :

The result is -6 
Hope this helps.
x=-3y-6
Hope this helps

Here's how i found it 

Let's solve for x.3x9y=18
Step 1: Add 9y to both sides.3x9y+9y=18+9y3x=9y+18
Step 2: Divide both sides by -3.3x−3=9y+18−3


x=3y6