Question

Solve this system of equations using substitution. Put your answer in ordered pair form, (x, y).
x - 2y = -4
2x - y = 1

Answer 1

(2,3)

Answer 2

x - 2y = -4
2x - y = 1.

First step = times -2 to first equation then add first equation to 2nd to get rid of x.
You get -x2 +4y = 8
2x -y = 1
now add them and your 2nd equation should become 3y = 9
now you can solve y, 3y = 9
y = 9/3
y = 3
now substitute y in either first or 2nd equation, 2x-(3) = 1
2x = 1 + 3
2x = 4
x = 4/2
x = 2
therefore answer for (x,y) = (2,3)