document.write( "Question 625464: x+4y=-8
\n" ); document.write( "x-4y=-8
\n" ); document.write( "use substitution method to solve\r
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Algebra.Com's Answer #393545 by reynard2007(52)\"\" \"About 
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\n" ); document.write( "You were given:
\n" ); document.write( "\"x%2B4y=-8\"
\n" ); document.write( "\"x-4y=-8\"
\n" ); document.write( " 
\n" ); document.write( "Use the second equation for the substitution.
\n" ); document.write( "\"x-4y=-8\"
\n" ); document.write( "\"x=4y-8\"
\n" ); document.write( " 
\n" ); document.write( "Substitute x with 4y-8
\n" ); document.write( "\"%284y-8%29%2B4y=-8\"
\n" ); document.write( "\"8y=-8%2B8=0\"
\n" ); document.write( "\"y=0\"
\n" ); document.write( " 
\n" ); document.write( "Look for the value of x by substituting y with 0
\n" ); document.write( "\"x%2B4%280%29=-8\"
\n" ); document.write( "\"x=-8\"
\n" ); document.write( " 
\n" ); document.write( "So x=-8 and y=0
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