SOLUTION: What are the steps to solve a system? Here's the example: x-2y=-7 5y=5x+20 I Have tried canceling out the -2y and 5y or 5x and x but I didn't get the answer right. I Need the

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: What are the steps to solve a system? Here's the example: x-2y=-7 5y=5x+20 I Have tried canceling out the -2y and 5y or 5x and x but I didn't get the answer right. I Need the       Log On


   

Question 412861: What are the steps to solve a system?
Here's the example:
x-2y=-7
5y=5x+20
I Have tried canceling out the -2y and 5y or 5x and x but I didn't get the answer right.
I Need the answer and steps so i know how to do this problem on my own when i have a test.
Please :)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
x-2y=-7
5y=5x+20
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Solving by elimination:
x - 2y = -7
x - y = -4
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Subtract and solve for "y":
y = 3
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Now solve for "x":
x - 2y = -7
x -2(3) = -7
x-6 = -7
x = -1
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Solution: (-1,3)
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Cheers,
Stan H.
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