document.write( "Question 701103: x+y=9 x=2y solve with substitution method \n" ); document.write( "

Algebra.Com's Answer #432226 by rfer(16322) $\"\"$ $\"About$

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2y+y=9
\n" ); document.write( "3y=9
\n" ); document.write( "y=9/3
\n" ); document.write( "y=3
\n" ); document.write( "-------------
\n" ); document.write( "x+3=9
\n" ); document.write( "x=9-3
\n" ); document.write( "x=6
\n" ); document.write( "--------------
\n" ); document.write( "x=2y
\n" ); document.write( "6=2*3 \n" ); document.write( "

\n" );