document.write( "Question 698901: Solve by substitution:\r
\n" ); document.write( "\n" ); document.write( "x=4y-9
\n" ); document.write( "x=y+3
\n" ); document.write( "

Algebra.Com's Answer #431102 by Alan3354(69443)\"\" \"About 
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Solve by substitution:\r
\n" ); document.write( "\n" ); document.write( "x=4y-9
\n" ); document.write( "x=y+3
\n" ); document.write( "-------------
\n" ); document.write( "Both sides = x, so they equal each other.
\n" ); document.write( "4y-9 = y+3
\n" ); document.write( "
\n" ); document.write( "
\n" );