document.write( "Question 1006679: 4x=8y
\n" ); document.write( "2x+5y=27 solve by substitution \n" ); document.write( "

Algebra.Com's Answer #622783 by rfer(16322) $\"\"$ $\"About$

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4x=8y
\n" ); document.write( "x=8y/4
\n" ); document.write( "x=2y
\n" ); document.write( "--------------
\n" ); document.write( "2x+5y=27
\n" ); document.write( "2(2y)+5y=27
\n" ); document.write( "9y=27
\n" ); document.write( "y=27/9
\n" ); document.write( "y=3
\n" ); document.write( "--------------
\n" ); document.write( "2x+5(3)=27
\n" ); document.write( "2x=27-15
\n" ); document.write( "x=12/2
\n" ); document.write( "x=6
\n" ); document.write( "---------------
\n" ); document.write( "(6,3)
\n" ); document.write( "--------------
\n" ); document.write( "x=2y
\n" ); document.write( "6=2*3
\n" ); document.write( "6=6 \n" ); document.write( "

\n" );