document.write( "Question 85707: Solve the system by addition.
\n" ); document.write( " 5x – 4y = –5
\n" ); document.write( " x – 2y = –7
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Algebra.Com's Answer #61903 by checkley75(3666)\"\" \"About 
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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
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