Asap! solve the system of equations using substitution. y = 2x – 10 y = 4x – 8 (–1, –12) (3, –4) (–4, –17) (3, 4)

Ok so I will take this from the top, lets start out  with choice A (-1,-12) we will need to see if the answer is equal to A. so first lets just merge these two problems into eachother to get 4x-8=2x-10 now, after subtracting 2x from each side we get 2x-8=-10. Now, add 8 to both sides which will give us 2x=-2... now it is simple, just divide -2 by 2 to get an answer for x as -1...Answer A is the correct answer