document.write( "Question 51695: If x>0,y>0,z>0 and x+y+z=1,prove that \"x%2F2-x+%2B+y%2F2-y+%2B+z%2F2-z%3E=3%2F5\" \n" ); document.write( "
Algebra.Com's Answer #34494 by darq(90)\"\" \"About 
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\"x%2F2-x+%2B+y%2F2-y+%2B+z%2F2-z+%3E=3%2F5\"\r
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\n" ); document.write( "\n" ); document.write( "\"-x%2F2-y%2F2-z%2F2+%3E=+3%2F5\"\r
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\n" ); document.write( "\n" ); document.write( "after multiplying both sides with -2. we will need to change sides because it is negative.\r
\n" ); document.write( "\n" ); document.write( "\"-6%2F5+%3E=+x%2By%2Bz\"\r
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\n" ); document.write( "\n" ); document.write( "\"-6%2F5+%3E=+1\"\r
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\n" ); document.write( "\n" ); document.write( "a positive number is always bigger than a negative so 1 is bigger than \"-6%2F5\". So it is proven that equation is in fact WRONG. But if you had written > instead of < of course the equation will be correct or if you had forgotten to put (-) before \"5%2F3\" it would have been correct.
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