Solve for both systems x + 2y = 1 and - 4x + 2y = 16

x + 2y = 1

x + 2y-2y = 1-2y

x= 1-2y

- 4x + 2y = 16

- 4(1-2y) + 2y = 16

- 4(1) (-4)(-2y) + 2y = 16

-4+8y+ 2y = 16

-4+10y = 16

-4+10y +4= 16+4

10y=20

10y/10=20/10

y=2

x= 1-2y

x= 1-2(2)

x= 1-4=-3