document.write( "Question 107809: solve the system by substitution:\r
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document.write( "4x-4y=0
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document.write( " y=2x-5 \n" );
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Algebra.Com's Answer #78594 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! substituting the value of y from the second equation into the first equation gives 4x-4(2x-5)=0\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "4x-8x+20=0 ... 20=4x \n" ); document.write( " |