document.write( "Question 265907: in the system of equation 3x+5y=9, y=4-x what would be the resulting equation if 4-x is substituted to y in the first equation \n" ); document.write( "
Algebra.Com's Answer #195433 by asuar010(338)\"\" \"About 
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3x+5(4-x)=9
\n" ); document.write( "3x+20-5x=9
\n" ); document.write( "-2x+20=9
\n" ); document.write( "-2x=-11
\n" ); document.write( "x=11/2
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