document.write( "Question 76123: Solve each of the following systems by substitution
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document.write( "8x - 4y =16
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document.write( "y = 2x - 4
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Algebra.Com's Answer #54653 by Earlsdon(6294)![]() ![]() ![]() You can put this solution on YOUR website! Solve by substitution: \n" ); document.write( "1) 8x-4y = 16 \n" ); document.write( "2) y = 2x-4 Substitute this for the y in equation 1) and solve for x. \n" ); document.write( "1a) 8x-4(2x-4) = 16 Simplify and solve for x. \n" ); document.write( "1a) 8x-8x+16 = 16 \n" ); document.write( "1a) 16 = 16 \n" ); document.write( "The two equations represent the same line and any value of x will satisfy the equations. \n" ); document.write( " |