Answer: I cannot show my notebook as I don't have my mobile right now but the answer with the soultion is right here -:
To solve this system of equations, we used elimination. First, we added the two equations together to get -3x + 12y = 3. Then, we solved this equation for y, getting y = 1. Finally, we plugged this value back into either of the equations to solve for x, getting x = -5. Thus, the solution to this system of equations is x = -5, y = 1.