document.write( "Question 129858: I need help with this problem\r
\n" ); document.write( "\n" ); document.write( " x+y=7
\n" ); document.write( " x-y=9\r
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Algebra.Com's Answer #94821 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
adding the two equations __ 2x=16 __ x=8\r
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\n" ); document.write( "\n" ); document.write( "substituting __ 8+y=7 __ y=-1
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