Greetings!
Solve for x.
[tex]-2(x+3y)=18[/tex]
Distribute the Parenthesis. How? Multiply all of the terms inside the parenthesis by the number outside the parenthesis.
[tex](-2)*x+(-2)*3y=18[/tex]
[tex]-2x-6y=18[/tex]
Add 6y to both sides.
[tex](-2x-6y)+6y=(18)+6y[/tex]
[tex]-2x=18+6y[/tex]
Divide both sides by -2.
[tex](-2x)/-2=(18+6y)/-2[/tex]
The Answer Is:
[tex]x=-9-3y[/tex]
[tex]x=-3y-9[/tex]
Hope this helps.
-Benjamin
