Question 142830This question is from textbook vla
: how do you solve x-8y=37 3x+8y=-17 by using the elimanation method it doesnt really help with the steps can you or anybody show me.
This question is from textbook vla
Answer by nabla(475)   (Show Source):
You can put this solution on YOUR website! x-8y=37
3x+8y=-17
When we have systems of equations, we can subtract one equation from the other (and likewise add them). The explanation of why that is is fairly advanced, but I will show you the easiest way to do this problem:
x-8y=37
3x+8y=-17
ADD the equations
x+3x-8y+8y=37-17
4x=20
x=5
Now, plug x=5 into the first equation to get y
5-8y=37
-32=8y
-4=y
solution set x=5, y=-4.
If it is unclear what I did (make sure you look carefully), send me an E-mail at enabla@gmail.com.
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