Question 417563
dont understand this problem and solution teacher put on board could you help me understand? I dont get it.
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I think you missed a line that was on the board: 
x = 5+2y
4y = 2x-10
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Substituting for "x" you get the following:
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4y=2x-10
4y=2(5+2y)-10
4y=10+4y-10
4y-4y=10-10
0=0
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Conclusion:
The system of equations is true for all values of x.
The two equation are really the same equation.
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Cheers,
Stan H.
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