document.write( "Question 201023: Solve using elimination\r
\n" ); document.write( "\n" ); document.write( "3r-5s=-3
\n" ); document.write( "5r+3s=29
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Algebra.Com's Answer #151270 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%283r-5s=-3%2C5r%2B3s=29%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"3%283r-5s%29=3%28-3%29\" Multiply the both sides of the first equation by 3.\r
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\n" ); document.write( "\n" ); document.write( "\"9r-15s=-9\" Distribute and multiply.\r
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\n" ); document.write( "\n" ); document.write( "\"5%285r%2B3s%29=5%2829%29\" Multiply the both sides of the second equation by 5.\r
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\n" ); document.write( "\n" ); document.write( "\"25r%2B15s=145\" 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%289r-15s=-9%2C25r%2B15s=145%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( "\"%289r-15s%29%2B%2825r%2B15s%29=%28-9%29%2B%28145%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"%289r%2B25r%29%2B%28-15s%2B15s%29=-9%2B145\" Group like terms.\r
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\n" ); document.write( "\n" ); document.write( "\"34r%2B0s=136\" Combine like terms.\r
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\n" ); document.write( "\n" ); document.write( "\"34r=136\" Simplify.\r
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\n" ); document.write( "\n" ); document.write( "\"r=%28136%29%2F%2834%29\" Divide both sides by \"34\" to isolate \"r\".\r
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\n" ); document.write( "\n" ); document.write( "\"r=4\" Reduce.\r
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\n" ); document.write( "\n" ); document.write( "\"9r-15s=-9\" Now go back to the first equation.\r
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\n" ); document.write( "\n" ); document.write( "\"9%284%29-15s=-9\" Plug in \"r=4\".\r
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\n" ); document.write( "\n" ); document.write( "\"36-15s=-9\" Multiply.\r
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\n" ); document.write( "\n" ); document.write( "\"-15s=-9-36\" Subtract \"36\" from both sides.\r
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\n" ); document.write( "\n" ); document.write( "\"-15s=-45\" Combine like terms on the right side.\r
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\n" ); document.write( "\n" ); document.write( "\"s=%28-45%29%2F%28-15%29\" Divide both sides by \"-15\" to isolate \"s\".\r
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\n" ); document.write( "\n" ); document.write( "\"s=3\" Reduce.\r
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\n" ); document.write( "\n" ); document.write( "So the solutions are \"r=4\" and \"s=3\".\r
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\n" ); document.write( "\n" ); document.write( "This means that the system is consistent and independent.
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