document.write( "Question 256343: solve each system using substitution. Write no solution or infinitely many solutions where appropriate.\r
\n" ); document.write( "\n" ); document.write( "4x+2y=8
\n" ); document.write( "y=-2x+4
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Algebra.Com's Answer #188504 by Fombitz(32388)\"\" \"About 
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\"4x%2B2y=8\"
\n" ); document.write( "\"y=-2x%2B4\"
\n" ); document.write( "Substitute directly for y in the first equation using the second.
\n" ); document.write( "\"4x%2B2y=8\"
\n" ); document.write( "\"4x%2B2%28-2x%2B4%29=8\"
\n" ); document.write( "\"4x-4x%2B8=8\"
\n" ); document.write( "\"8=8\"
\n" ); document.write( "The two lines are the same line, infinite number of solutions.
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