Step-by-step explanation:
[tex] - 2x + 4y = - 4 \\ 2x + 8y = 16 \\ 2x = 16 - 8y \\ x = \frac{16 - 8y}{2} \\ x = 8 - 4y \\ - 2(8 - 4y) + 4y = - 4 \\ - 16 + 5y + 4y = - 4 \\ 9y = 12 \\[/tex]
[tex] y = \frac{12}{9} = 1.33 \\ x = 8 - 4y \\ x = 8 - 4 \frac{12}{9} \\ x = 8 - \frac{48}{9} \\ x = 2.67 \\ [/tex]
(2.67, 1.33)
