Solve for xxx. 12x+7 4012x+7 40

Step-by-step explanation:

I'm assuming you have an equation

and you want to solve for x.

This is easy. First, subtract 7 from each side of the equation.

Then divide both sides by 12, to get x alone on the left side.

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.