42.7k views
1 vote
-4x-2y=-124x+8y=-24How do I solve each system by elimination?

User Fishfood
by
6.3k points

1 Answer

1 vote

Given:


\begin{gathered} -4x-2y=-12\ldots.(1) \\ 4x+8y=-24\ldots\text{ (2)} \end{gathered}

Add equation (1) and (2)


-4x-2y+4x+8y=-12-24


6y=-36
y=-6

Substitute y=-6 in (2)


4x+8(-6)=-24
4x-48=-24
4x=48-24
x=6

User Race B
by
7.7k points