document.write( "Question 91970: Solve the following systems by substitution please help\r
\n" ); document.write( "\n" ); document.write( "8x - 4y= 16
\n" ); document.write( " y = 2x - 4\r
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Algebra.Com's Answer #66833 by homeworkhelpanytime(21)\"\" \"About 
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8x - 4y= 16 ......(1)
\n" ); document.write( "y = 2x - 4 ......(2)\r
\n" ); document.write( "\n" ); document.write( "substituting the value y in equation (1)\r
\n" ); document.write( "\n" ); document.write( "8x - 4*(2x -4) = 16
\n" ); document.write( "8x - 8x -16 = 16
\n" ); document.write( "0=0\r
\n" ); document.write( "\n" ); document.write( "As the equation is true so these equation have infinitely many solutions as they coincide on each other.
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