document.write( "Question 200626: y=-3x+7
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Algebra.Com's Answer #150882 by jim_thompson5910(35256)\"\" \"About 
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\"y=-3x%2B7\" Start with the first equation.\r
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\n" ); document.write( "\n" ); document.write( "\"4x-7=-3x%2B7\" Plug in \"y=4x-7\"\r
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\n" ); document.write( "\n" ); document.write( "\"4x=-3x%2B7%2B7\" Add \"7\" to both sides.\r
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\n" ); document.write( "\n" ); document.write( "\"4x%2B3x=7%2B7\" Add \"3x\" to both sides.\r
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\n" ); document.write( "\n" ); document.write( "\"7x=7%2B7\" Combine like terms on the left side.\r
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\n" ); document.write( "\n" ); document.write( "\"7x=14\" Combine like terms on the right side.\r
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\n" ); document.write( "\n" ); document.write( "\"x=%2814%29%2F%287%29\" Divide both sides by \"7\" 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( "\"y=-3x%2B7\" Go back to the first equation\r
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\n" ); document.write( "\n" ); document.write( "\"y=-3%282%29%2B7\" Plug in \"x=2\"\r
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\n" ); document.write( "\n" ); document.write( "\"y=-6%2B7\" Multiply\r
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\n" ); document.write( "\n" ); document.write( "\"y=1\" Add
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\n" ); document.write( "\n" ); document.write( "So the solutions are \"x=2\" and \"y=1\" which form the ordered pair (2,1).\r
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\n" ); document.write( "\n" ); document.write( "So the system is consistent and independent.
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