y = 12 x - 20 y = 28 What is the solution x , y to the given system

Question

y = 12 x - 20 y = 28 What is the solution x , y to the given system of equations?

Accepted Answer

Choice A is correct. The second equation in the given system is y = 28 . Substituting 28 for y in the first equation in the given system yields 28 = 12 x - 20 . Adding 20 to both sides of this equation yields 48 = 12 x . Dividing both sides of this equation by 12 yields 4 = x . Therefore, the solution x , y to the given system of equations is 4 , 28 . Choice B is incorrect and may result from conceptual or calculation errors. Choice C is incorrect. This is the solution y , x , not x , y , to the given system of equations. Choice D is incorrect and may result from conceptual or calculation errors.

Question y-12-x