document.write( "Question 190638: Solve by using the elimination method:\r
\n" ); document.write( "\n" ); document.write( "4x + 5y = 3
\n" ); document.write( "8x + 10y = 6\r
\n" ); document.write( "\n" ); document.write( "What is the solution of the system?
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Algebra.Com's Answer #143116 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=3%2C8x%2B10y=6%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"-2%284x%2B5y%29=-2%283%29\" Multiply the both sides of the first equation by -2.\r
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\n" ); document.write( "\n" ); document.write( "\"-8x-10y=-6\" 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=-6%2C8x%2B10y=6%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=%28-6%29%2B%286%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"%28-8x%2B8x%29%2B%28-10y%2B10y%29=-6%2B6\" 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. So the system is consistent and dependent.
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