document.write( "Question 400377: Substitution method.
\n" ); document.write( "y=4x-9
\n" ); document.write( "y=x-3
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Algebra.Com's Answer #283630 by sofiyac(983)\"\" \"About 
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x-3=4x-9
\n" ); document.write( "6=3x
\n" ); document.write( "2=x
\n" ); document.write( "y=x-3=2-3=-1\r
\n" ); document.write( "\n" ); document.write( "(2,-1)
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