document.write( "Question 928740: X+3y=6 2x+3y=18 solve by substitution \n" ); document.write( "

Algebra.Com's Answer #563833 by rfer(16322) $\"\"$ $\"About$

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x=-3y+6
\n" ); document.write( "2x+3y=18
\n" ); document.write( "2(-3y+6)+3y=18
\n" ); document.write( "-6y+12+3y=18
\n" ); document.write( "-3y=18-12
\n" ); document.write( "y=6/-3
\n" ); document.write( "y=-2
\n" ); document.write( "--------------
\n" ); document.write( "2x+3(-2)=18
\n" ); document.write( "2x-6=18
\n" ); document.write( "x=24/2
\n" ); document.write( "x=12
\n" ); document.write( "(12,-2)
\n" ); document.write( "-------------
\n" ); document.write( "x+3y=6
\n" ); document.write( "12+3(-2)=6
\n" ); document.write( "6=6 \n" ); document.write( "

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