document.write( "Question 918656: Solve the system of equations by the addition method.\r
\n" ); document.write( "\n" ); document.write( "{ 4x = 5y =5
\n" ); document.write( "{ 16x - 20y =10\r
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\n" ); document.write( "\n" ); document.write( "Select the correct answer is ether A,B OR C\r
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\n" ); document.write( "\n" ); document.write( "A) The solution is_
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\n" ); document.write( "C) There is no solution
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Algebra.Com's Answer #557153 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
\"+4x+%2B+5y+=5\"....eq.1
\n" ); document.write( "\"+16x+-+20y+=10\"...eq.2....simplify, divide by \"4\"
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\n" ); document.write( "\n" ); document.write( "\"+4x+%2B+5y+=5\"....eq.1
\n" ); document.write( "\"+4x+-+5y+=10%2F4\"...eq.2............add both eq.1 and eq.2
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\n" ); document.write( "\n" ); document.write( "\"+4x+%2B+5y%2B4x+-+5y+=5%2Bcross%2810%295%2Fcross%284%292\"\r
\n" ); document.write( "\n" ); document.write( "\"+8x++=5%2B5%2F2\"\r
\n" ); document.write( "\n" ); document.write( "\"+8x++=10%2F2%2B5%2F2\"\r
\n" ); document.write( "\n" ); document.write( "\"+8x++=15%2F2\"\r
\n" ); document.write( "\n" ); document.write( "\"+x++=%2815%2F2%29%2F8\"\r
\n" ); document.write( "\n" ); document.write( "\"+x++=15%2F16\"\r
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\n" ); document.write( "\n" ); document.write( "\"+4x+%2B+5y+=5\"....eq.1 substitute \"x\"\r
\n" ); document.write( "\n" ); document.write( "\"+cross%284%29%2815%2Fcross%2816%294%29+%2B+5y+=5\"\r
\n" ); document.write( "\n" ); document.write( "\"+%2815%2F4%29+%2B+5y+=5\"\r
\n" ); document.write( "\n" ); document.write( "\"+++5y+=5-%2815%2F4%29\"\r
\n" ); document.write( "\n" ); document.write( "\"+++5y+=20%2F4-15%2F4\"\r
\n" ); document.write( "\n" ); document.write( "\"+++5y+=5%2F4\"\r
\n" ); document.write( "\n" ); document.write( "\"+++y+=%28cross%285%291%2F4%29%2Fcross%285%291\"\r
\n" ); document.write( "\n" ); document.write( "\"+++y+=1%2F4\"\r
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\n" ); document.write( "\n" ); document.write( "A) The solution is_( \"+15%2F16\",\"+1%2F4\") or as decimal ( \"+0.9\",\"+0.25\")\r
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\n" ); document.write( "\n" ); document.write( "\"+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+1-4x%2F5%2C+4x%2F5+-1%2F2%29+\"\r
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