document.write( "Question 89529: solve the system by addition
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document.write( "2x - 9y = -4
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document.write( "x - 4y = -1 \n" );
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Algebra.Com's Answer #65077 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! multiply the second equation by -2 to get -2x+8y=2 ... add this result to the first equation to get\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(2x-9y)+(-2x+8y)=-4+2 ... -y=-2 ... y=2 ... x-4(2)=-1 ... x=7 \n" ); document.write( " |