document.write( "Question 550363: 5x - 3y = 8
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Algebra.Com's Answer #358663 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Start with the given system of equations:\r
\n" ); document.write( "\n" ); document.write( "\"system%285x-3y=8%2C-5x%2By=4%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( "\"%285x-3y%29%2B%28-5x%2By%29=%288%29%2B%284%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"%285x%2B-5x%29%2B%28-3y%2B1y%29=8%2B4\" Group like terms.\r
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\n" ); document.write( "\n" ); document.write( "\"0x%2B-2y=12\" Combine like terms.\r
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\n" ); document.write( "\n" ); document.write( "\"-2y=12\" Simplify.\r
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\n" ); document.write( "\n" ); document.write( "\"y=%2812%29%2F%28-2%29\" Divide both sides by \"-2\" to isolate \"y\".\r
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\n" ); document.write( "\n" ); document.write( "\"y=-6\" Reduce.\r
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\n" ); document.write( "\n" ); document.write( "\"5x-3y=8\" Now go back to the first equation.\r
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\n" ); document.write( "\n" ); document.write( "\"5x-3%28-6%29=8\" Plug in \"y=-6\".\r
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\n" ); document.write( "\n" ); document.write( "\"5x%2B18=8\" Multiply.\r
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\n" ); document.write( "\n" ); document.write( "\"5x=8-18\" Subtract \"18\" from both sides.\r
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\n" ); document.write( "\n" ); document.write( "\"5x=-10\" Combine like terms on the right side.\r
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\n" ); document.write( "\n" ); document.write( "\"x=%28-10%29%2F%285%29\" Divide both sides by \"5\" to isolate \"x\".\r
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\n" ); document.write( "\n" ); document.write( "\"x=-2\" Reduce.\r
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\n" ); document.write( "\n" ); document.write( "So the solutions are \"x=-2\" and \"y=-6\".\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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\n" ); document.write( "\n" ); document.write( "Notice when we graph the equations, we see that they intersect at . So this visually verifies our answer.\r
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\n" ); document.write( "\n" ); document.write( " Graph of \"5x-3y=8\" (red) and \"-5x%2By=4\" (green) \r
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