document.write( "Question 70127: Solve the system by addition:\r
\n" ); document.write( "\n" ); document.write( "5x-4y=-5
\n" ); document.write( "x-2y=-7
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Algebra.Com's Answer #50041 by checkley75(3666)\"\" \"About 
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 NOW SUBSTITUTE 5 FOR Y & SOLVE FOR X
\n" ); document.write( "5X-4*5=-5
\n" ); document.write( "5X-20=-5
\n" ); document.write( "5X=-5+20
\n" ); document.write( "5X=15
\n" ); document.write( "X=15/5
\n" ); document.write( "X=3 ANSWER.
\n" ); document.write( "PROOF
\n" ); document.write( "5*3-4*5=-5
\n" ); document.write( "15-20=-5
\n" ); document.write( "-5=-5
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