document.write( "Question 142285: Use elimination to solve the system of equations.
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document.write( "4x-9y=15
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document.write( "3x-4y=14 \n" );
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Algebra.Com's Answer #103592 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! 4x-9y=15 multiply this equation by -3 \n" ); document.write( "3x-4y=14 multiply thisequation by 4 & then add them. \n" ); document.write( "-12x+27y=-45 \n" ); document.write( "12x-16y=56 \n" ); document.write( "------------------ \n" ); document.write( "11y=11 \n" ); document.write( "y=11/11 \n" ); document.write( "y=1 answer. \n" ); document.write( "4x-9*1=15 \n" ); document.write( "4x-9=15 \n" ); document.write( "4x=15+9 \n" ); document.write( "4x=24 \n" ); document.write( "x=24/4 \n" ); document.write( "x=6 answer. \n" ); document.write( "Proof \n" ); document.write( "3*6-4*1=14 \n" ); document.write( "18-4=14 \n" ); document.write( "14=14 \n" ); document.write( " \n" ); document.write( " |