document.write( "Question 351828: how do you solve each system of simultaneous equations by using the substitution method.\r
\n" ); document.write( "\n" ); document.write( " x+y=3
\n" ); document.write( " 3x+2y=9
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Algebra.Com's Answer #251515 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
1.\"x%2By=3\"
\n" ); document.write( "2.\"3x%2B2y=9\"
\n" ); document.write( "From eq. 1,
\n" ); document.write( "\"x=3-y\"
\n" ); document.write( "Substitute into eq. 2,
\n" ); document.write( "\"3%283-y%29%2B2y=9\"
\n" ); document.write( "\"9-3y%2B2y=9\"
\n" ); document.write( "\"-y=0\"
\n" ); document.write( "\"highlight%28y=0%29\"
\n" ); document.write( "Then from eq. 1,
\n" ); document.write( "\"x%2B0=3\"
\n" ); document.write( "\"highlight%28x=3%29\"
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