document.write( "Question 85707: Solve the system by addition.
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document.write( " 5x – 4y = –5
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document.write( " x – 2y = –7
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Algebra.Com's Answer #61903 by checkley75(3666)![]() ![]() ![]() You can put this solution on YOUR website! 5X-4Y=-5 NOW MULTIPLY THE SECOND EQUATION BY -5 & ADD: \n" ); document.write( "-5X+10Y=35 \n" ); document.write( "--------------------------------------- \n" ); document.write( "6Y=30 \n" ); document.write( "Y=30/6 \n" ); document.write( "Y=5 ANSWER. \n" ); document.write( "5X-4*5=-5 \n" ); document.write( "5X-20=-5 \n" ); document.write( "5X=20-5 \n" ); document.write( "5X=15 \n" ); document.write( "X=15/5 \n" ); document.write( "X=3 ANSWER. \n" ); document.write( "PROOF \n" ); document.write( "3-2*5=-7 \n" ); document.write( "3-10=-7 \n" ); document.write( "-7=-7 \n" ); document.write( " |