document.write( "Question 378720: 4x+5y=5
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Algebra.Com's Answer #268995 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%284x%2B5y=5%2C8x%2B10y=10%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"-2%284x%2B5y%29=-2%285%29\" Multiply the both sides of the first equation by -2.\r
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\n" ); document.write( "\n" ); document.write( "\"-8x-10y=-10\" Distribute and multiply.\r
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\n" ); document.write( "\n" ); document.write( "So we have the new system of equations:\r
\n" ); document.write( "\n" ); document.write( "\"system%28-8x-10y=-10%2C8x%2B10y=10%29\"\r
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\n" ); document.write( "\n" ); document.write( "Now 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( "\"%28-8x-10y%29%2B%288x%2B10y%29=%28-10%29%2B%2810%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"%28-8x%2B8x%29%2B%28-10y%2B10y%29=-10%2B10\" Group like terms.\r
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\n" ); document.write( "\n" ); document.write( "\"0x%2B0y=0\" Combine like terms.\r
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\n" ); document.write( "\n" ); document.write( "\"0=0\"Simplify.\r
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\n" ); document.write( "\n" ); document.write( "Since \"0=0\" is ALWAYS true, this means that there are an infinite number of solutions. \r
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\n" ); document.write( "\n" ); document.write( "So the system is consistent and dependent.\r
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\n" ); document.write( "\n" ); document.write( "If you need more help, email me at jim_thompson5910@hotmail.com\r
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\n" ); document.write( "\n" ); document.write( "Also, feel free to check out my tutoring website\r
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\n" ); document.write( "\n" ); document.write( "Jim
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