The portion of the central nervous system that originates in the brain and extends down to the lower extremity of the trunk and is protected by the spinal column is the

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4

well basically since ima beginner people will answer any subject "right away"and if you get more points you could ask more questions or if you answer someone's question you get points

well people will have to mark your answer as the best answer. and from that u receive crowns.

~batmans wife dun dun