SOLUTION: x=7/2y+4 2x-7y=8 solve by any method

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Question 166684: x=7/2y+4
2x-7y=8
solve by any method

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
Start with the given system





Plug in into the first equation. In other words, replace each with . Notice we've eliminated the variables. So we now have a simple equation with one unknown.


Distribute


Multiply


Combine like terms on the left side.


Subtract from both sides.


Combine like terms on the right side.


Simplify.


Since this equation is always true for any y value, this means y can equal any number. So there are an infinite number of solutions.


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