SOLUTION: Can these systems be solved with the addition method. I am not getting it if it can. Show steps so I may see where I went wrong. Please thank you.
3x - 2y =8
x = -2y
and 4y =
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-> SOLUTION: Can these systems be solved with the addition method. I am not getting it if it can. Show steps so I may see where I went wrong. Please thank you.
3x - 2y =8
x = -2y
and 4y =
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Question 178684: Can these systems be solved with the addition method. I am not getting it if it can. Show steps so I may see where I went wrong. Please thank you.
3x - 2y =8
x = -2y
and 4y = -5x
5x + 8y = 20
Thank you Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 3x - 2y =8
x = -2y
---
Rearrange:
3x - 2y = 8
x + 2y = 0
--------------
Add to solve for "x":
4x = 8
x = 2
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Subsitute to solve for "Y":
2 = -2y
y = -1
==============
4y = -5x
5x + 8y = 20
---
Rearrange:
-5x - 4y = 0
5x + 8y= 20
----------------
Add to get:
4y = 20
y = 5
-----
Substitute to solve for "x":
-5x = 4*5
x = -4
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Cheers,
Stan H.
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