document.write( "Question 120606: y=x+2
\n" ); document.write( "2x+y=11\r
\n" ); document.write( "\n" ); document.write( "Could someone please help me?
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Algebra.Com's Answer #88424 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
Start with the given system\r
\n" ); document.write( "\n" ); document.write( "\"2x%2By=11\"
\n" ); document.write( "\"y=x%2B2\"\r
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\n" ); document.write( "\n" ); document.write( "\"2x%2Bx%2B2=11\" Plug in \"y=x%2B2\" into the first equation. In other words, replace each \"y\" with \"x%2B2\". Notice we've eliminated the \"y\" variables. So we now have a simple equation with one unknown.\r
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\n" ); document.write( "\n" ); document.write( "\"3x%2B2=11\" Combine like terms on the left side\r
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\n" ); document.write( "\n" ); document.write( "\"3x=11-2\"Subtract 2 from both sides\r
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\n" ); document.write( "\n" ); document.write( "\"3x=9\" Combine like terms on the right side\r
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\n" ); document.write( "\n" ); document.write( "\"x=%289%29%2F%283%29\" Divide both sides by 3 to isolate x\r
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\n" ); document.write( "\n" ); document.write( "\"x=3\" Divide\r
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\n" ); document.write( "\n" ); document.write( "Now that we know that \"x=3\", we can plug this into \"y=x%2B2\" to find \"y\"\r
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\n" ); document.write( "\n" ); document.write( "\"y=%283%29%2B2\" Substitute \"3\" for each \"x\"\r
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\n" ); document.write( "\n" ); document.write( "\"y=5\" Simplify\r
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\n" ); document.write( "\n" ); document.write( "So our answer is \"x=3\" and \"y=5\" which also looks like \r
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\n" ); document.write( "\n" ); document.write( "Notice if we graph the two equations, we can see that their intersection is at . So this verifies our answer.\r
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\n" ); document.write( "\n" ); document.write( "\"+graph%28+500%2C+500%2C+-7%2C+7%2C+-7%2C+7%2C+11-2x%2C+x%2B2%29+\" Graph of \"2x%2B1y=11\" (red) and \"y=x%2B2\" (green)\r
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