document.write( "Question 330295: Solve the system of equations by the method of your choice. Are the equations independent, dependent, or inconsistent?
\n" ); document.write( "x + y=4 and x-y=5? \r
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\n" ); document.write( "Shelley
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Algebra.Com's Answer #236733 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "Start with the given system of equations:\r
\n" ); document.write( "\n" ); document.write( "\"system%28x%2By=4%2Cx-y=5%29\"\r
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\n" ); document.write( "\n" ); document.write( "Add the equations together. You can do this by simply adding the two left sides and the two right sides separately like this:\r
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\n" ); document.write( "\n" ); document.write( "\"%28x%2By%29%2B%28x-y%29=%284%29%2B%285%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"%28x%2Bx%29%2B%28y-y%29=4%2B5\" Group like terms.\r
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\n" ); document.write( "\n" ); document.write( "\"2x%2B0y=9\" Combine like terms.\r
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\n" ); document.write( "\n" ); document.write( "\"2x=9\" Simplify.\r
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\n" ); document.write( "\n" ); document.write( "\"x=%289%29%2F%282%29\" Divide both sides by \"2\" to isolate \"x\".\r
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\n" ); document.write( "\n" ); document.write( "\"x%2By=4\" Now go back to the first equation.\r
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\n" ); document.write( "\n" ); document.write( "\"9%2F2%2By=4\" Plug in \"x=9%2F2\".\r
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\n" ); document.write( "\n" ); document.write( "\"2%289%2Fcross%282%29%2By%29=2%284%29\" Multiply both sides by the LCD \"2\" to clear any fractions.\r
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\n" ); document.write( "\n" ); document.write( "\"9%2B2y=8\" Distribute and multiply.\r
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\n" ); document.write( "\n" ); document.write( "\"2y=8-9\" Subtract \"9\" from both sides.\r
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\n" ); document.write( "\n" ); document.write( "\"2y=-1\" Combine like terms on the right side.\r
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\n" ); document.write( "\n" ); document.write( "\"y=%28-1%29%2F%282%29\" Divide both sides by \"2\" to isolate \"y\".\r
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\n" ); document.write( "\n" ); document.write( "So the solutions are \"x=9%2F2\" and \"y=-1%2F2\".\r
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\n" ); document.write( "\n" ); document.write( "Which form the ordered pair .\r
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\n" ); document.write( "\n" ); document.write( "This means that the system is consistent and independent.\r
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