document.write( "Question 122917: Solve the system by addition.\r
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document.write( " 4x – 8y = –5
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document.write( " 8x + 4y = 5 \n" );
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Algebra.Com's Answer #90226 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! 4X-8Y=-5 NOW MULTIPLY THE OTHER EQUATION BY 2 * ADD. \n" ); document.write( "16X+8Y=10 \n" ); document.write( "----------------------------- \n" ); document.write( "20X=5 \n" ); document.write( "X=5/20 \n" ); document.write( "X=1/4 ANSWER. \n" ); document.write( "4*1/4-8Y=-5 \n" ); document.write( "1-8Y=-5 \n" ); document.write( "-8Y=-5-1 \n" ); document.write( "Y=-6/-8 \n" ); document.write( "Y=3/4 ANSWER. \n" ); document.write( "PROOF \n" ); document.write( "8*1/4+4*3/4=5 \n" ); document.write( "2+3=5 \n" ); document.write( "5=5 \n" ); document.write( " |