document.write( "Question 466803: Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this.
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document.write( "-8x – 4y = -68
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document.write( "x + 3y = 16
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Algebra.Com's Answer #320270 by mananth(16946)![]() ![]() You can put this solution on YOUR website! -8x-4y=-68 .............1 \n" ); document.write( "3y=16-x ---------2 \n" ); document.write( "/3 \n" ); document.write( "y=5.33-0.33x \n" ); document.write( " \n" ); document.write( "Substitute y in (1) \n" ); document.write( "-8x-4(5.33-0.33 x)=-68 \n" ); document.write( "-8x-21.33+1.33x=-68 \n" ); document.write( "-8x+1.33x=-68+ 21.33 \n" ); document.write( "-6.67 x = -46.67 \n" ); document.write( "/-6.67 \n" ); document.write( "x=7 \n" ); document.write( "Plug the value of x in (1) \n" ); document.write( "-8x-4y =-68 \n" ); document.write( "-8*7-4y=-68 \n" ); document.write( "-56-4y = -68 \n" ); document.write( "-4y=-12 \n" ); document.write( "/-4 \n" ); document.write( "y=3 \n" ); document.write( " \n" ); document.write( " |