document.write( "Question 640554: Help me solve\r
\n" ); document.write( "\n" ); document.write( "1) 3x-y=7,for y\r
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\n" ); document.write( "\n" ); document.write( "2) 5y-10+y=7y+18-5y
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Algebra.Com's Answer #403289 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
# 1\r
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\n" ); document.write( "\n" ); document.write( "\"3x-y=7\"\r
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\n" ); document.write( "\n" ); document.write( "\"-y=7-3x\"\r
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\n" ); document.write( "\n" ); document.write( "\"-y=-3x%2B7\"\r
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\n" ); document.write( "\n" ); document.write( "\"y=%28-3x%2B7%29%2F%28-1%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"y=%28-3x%29%2F%28-1%29%2B%287%29%2F%28-1%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"y=3x-7\"\r
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\n" ); document.write( "\n" ); document.write( "# 2\r
\n" ); document.write( "\n" ); document.write( "\"5y-10%2By=7y%2B18-5y\" Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( "\"6y-10=7y%2B18-5y\" Combine like terms on the left side.\r
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\n" ); document.write( "\n" ); document.write( "\"6y-10=2y%2B18\" Combine like terms on the right side.\r
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\n" ); document.write( "\n" ); document.write( "\"6y=2y%2B18%2B10\" Add \"10\" to both sides.\r
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\n" ); document.write( "\n" ); document.write( "\"6y-2y=18%2B10\" Subtract \"2y\" from both sides.\r
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\n" ); document.write( "\n" ); document.write( "\"4y=18%2B10\" Combine like terms on the left side.\r
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\n" ); document.write( "\n" ); document.write( "\"4y=28\" Combine like terms on the right side.\r
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\n" ); document.write( "\n" ); document.write( "\"y=%2828%29%2F%284%29\" Divide both sides by \"4\" to isolate \"y\".\r
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\n" ); document.write( "\n" ); document.write( "\"y=7\" Reduce.\r
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\n" ); document.write( "\n" ); document.write( "Answer:\r
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\n" ); document.write( "\n" ); document.write( "So the solution is \"y=7\"
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