Answer: x = –12
Explanation
Given
[tex]3-x=-9[/tex]To solve the equation, we have to isolate x.
• 1. Subtracting 3 from both sides of the equation
[tex]3-3-x=-9-3[/tex][tex]-x=-12[/tex]2. Multiplying both sides of the equation times –1
[tex]-x(-1)=-12(-1)[/tex][tex]x=12[/tex]
