Judging by the question at hand I generated this equation. x+y=12 x=2y
I begin this question by plugging in the x=2y into the equation for x. So the new equation should be 3y=12. I then divide the entire equation by 3 to get y=4.
Next I plug y=4 into the equation, the new equation should be x+4=12. I then subtract 4 from both sides to get x=8.
