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February 28, 2015

February 28, 2015

Posted by **Casey** on Wednesday, March 19, 2008 at 10:24am.

9x-9y=-45

9y-9x=45

- algebra -
**drwls**, Wednesday, March 19, 2008 at 11:18amThose two equations are really the same except for a sign change on both sides. They are not independent. Both will plot as the same line on a graph.

Since you have only one line instead of two intersecting lines, there is no single solution. Any x,y combination with y-x=5 is a solution.

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