document.write( "Question 34477: Solve by substitution:\r
\n" ); document.write( "\n" ); document.write( "x+3y=-25
\n" ); document.write( "y=-5x
\n" ); document.write( "

Algebra.Com's Answer #20779 by Prithwis(166)\"\" \"About 
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x+3y=-25
\n" ); document.write( "y=-5x\r
\n" ); document.write( "\n" ); document.write( "x+3(-5x)=-25
\n" ); document.write( "x-15x=-25
\n" ); document.write( "-14x=-25
\n" ); document.write( "x=25/14\r
\n" ); document.write( "\n" ); document.write( "y=-5(25/14)
\n" ); document.write( "y=-125/14\r
\n" ); document.write( "\n" ); document.write( "(x,y) = (25/14,-125/14)
\n" ); document.write( "
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