Asked by Carlos

Can someone please help explain this, my notes aren't helping me much.

Given the following system of linear equations:

{x-4y=20
-3x+4y=-12

The solution to the system is:

The system is:

The equation is:

Please help
Answered by Steve
x-4y = 20
-3x+4y = -12

add them together and you get

-2x = 8
x = -4

Now use that to get y.
Answered by Carlos
do you plug it into the first equation or the second?
Answered by Carlos
i got it thanks
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