document.write( "Question 218405: Substitution method
\n" ); document.write( "y=-3x+13
\n" ); document.write( "2x+9y=-8
\n" ); document.write( "

Algebra.Com's Answer #164505 by Fombitz(32388)\"\" \"About 
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2x+9y=-8
\n" ); document.write( "2x+9(-3x+13)=-8
\n" ); document.write( "2x-27x+117=-8
\n" ); document.write( "-25x=-125
\n" ); document.write( "x=5
\n" ); document.write( "y=-3x+13
\n" ); document.write( "y=-3(5)+13
\n" ); document.write( "y=-2
\n" ); document.write( "(5,-2)
\n" ); document.write( "
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