document.write( "Question 463024: Solve the linear system by substitution \r
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document.write( "3x - 3y = -6
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document.write( "x + 2y = -1 \n" );
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Algebra.Com's Answer #317324 by robertb(5830)![]() ![]() You can put this solution on YOUR website! From the bottom equation, x = -2y - 1.\r \n" ); document.write( "\n" ); document.write( "Putting this into the top equation, we get 3(-2y - 1) - 3y = -6, or\r \n" ); document.write( "\n" ); document.write( "-6y - 3 - 3y = -6, \r \n" ); document.write( "\n" ); document.write( "-9y = -3, or y = 1/3.\r \n" ); document.write( "\n" ); document.write( "==> x = -2/3 - 1 = -5/3. \n" ); document.write( " |