Question

-x+2y=-15 8x-2y=-20 After performing your first step in Elimination, what is the resulting equation?

Answer 1

Let:

$\begin{gathered} -x+2y=-15_{\text{ }}(1) \\ 8x-2y=-20_{\text{ }}(2) \end{gathered}$

Using elimination:

$\begin{gathered} (1)+(2) \\ -x+8x+2y-2y=-15-20 \\ 7x=-35 \end{gathered}$

Answer:

7x = -35